I have a 3 hour date scheduled on Wednesday with one of my ATF's and have abstained for about 10 days in anticipation. I have been aroused a lot today and my balls are quite painful. Will it pass? Should I give in and ejaculate? I don't think I can go 3 days in this condition.

Go get a massage and bust one today. You'll recover in time to make Wednesday memorable. Let her clean your clock. Doing it yourself will not be fun, right?

get rid of it...or you will ache into Wed!

Unload. Three days are more than enough for you to recover.

it is not healthy what you are doing...you should release

There is a toaist practice called protecting your chi where men abstain from ejaculation.  It is said to promote health and longevity.  And those I know who practice it have nothing but good things to say about it.  And yes, they have orgasms without ejaculating.

Have they figured out how to shunt their ejaculate into their bladders?

I did that once.....Gave up on it for no particular reason....

That was what happened to me a while ago -- she moved in with me, I finally could have sex any time (and she wanted too), so I got the "blue balls".  The experience was, at the beginning, you'd feel slight pain for a couple of days, but it would not undermine your desires.  Also, It's totally harmless.  After a while, even if you still do it at the pace, the "blue balls" syndrome would go away.

But, I also felt hungry for food a lot after she moved in.

About the only ting more ridiculous than the premise of this tread, are the answers supplied so far!  Your balls hurt because that's all you can think about, which is that your balls hurt!  Maybe try wearing some underwear, maybe you sat on your nuts!  And what's with these answers?  Is there a limit on how long a male can wait before an ejaculation?  Hopefully you Males(?) know that the testicles do NOT just keep making and trying to store sperm at a linear rate, and will continue to do so until either you "release" the overflow pressure, or your balls explode!
Never gone 10 days without sex, and did NOT have pain?  Regardless of the bull you hear on this board, guys go weeks, months at a time without pain.  Married guys, even longer.  
The excess sperm dies, and is absorbed by the body
and is eliminted.  My god, how to you think a guy with a vasectomy could possibly survive.  They NEVER release sperm!  They would have to be castrated to prevent later nut pain. At least they would be warmly welcomed on this board by the other "manginas" in the same boat.
Now, I don't (and don't want to) know what has caused your arousal, but being aroused beyond a certain point, then not allowing ejaculation can cause some painful situations.  But over 90% of you ejaculate comes from the prostate and not your testicles.  Maybe you have blue "Prostate".
Go take a warm shower. Relax, take a warm bath, and leave your hands off the damn thing!
And quit thinking about your balls, Christ, no wonder they hurt!!!

you don't keep getting aroused. That is as long as what you are experiencing is vasocongestion caused by sexual arousal.

My question to you is why would you seek health related advice on this board? I mean, just because everyone here is here because of having sex does not mean that you find a higher level of expertise regarding health matters compared to the general population. I mean is this like the replacement for high-school locker room advice? If you read the opinions posted on such things and then do a little research, you'll find that you will get a lot of erronious info.

Here's some info from WebMD:

"During arousal the testicles also increase in size due to vasocongestion, the accumulation of blood in the pelvis that occurs during arousal. The skin of the scrotum thickens and the testicles increase in size usually by approximately 50% at the height of arousal. However, Masters and Johnson found that if sexual excitement is sustained long enough, the testicles could almost double in size, returning to normal size after orgasm. They also found that this increase in size tends to taper off as men age."

Even without an orgasm, vasocongestion goes away in about an hour or so on it's own. But if it bothers you that much that you can't wait a hour or so, or the heaviness and discomfort seem severe, you may want to seek advice from a health care professional.

If you've never experienced the pain, count yourself very lucky.

(Click link.)

Wear a jock strap as it'll keep the "boys" from rising and falling so much. Learned that from a college roomie who got laid a bunch!

If you're experimenting with this practice it's bound to happen sooner or later.  Hell, it can happen to anyone who's dancing along the edge of orgasm and trying to hold back.  It's happened to me.  

4 advil will help with residual pain and reduce inflammation

It takes quite a bit of control and self awareness.........It also leads to the ever elusive male multiple orgasm.

I wonder what the birth control ramifications are...??? I doubt it's foolproof but interesting nevertheless.