but not sure what your problem is.  You just have trouble with the pop?  It might help us if you gave more info about your problem.  We are here to help if we can.

Swim

Perhaps booking longer encounters will help so you can get comfortable, relax and enjoy more.  
Also a glass of wine or your favorite beverage may help but do not drink too much because that does not help either.

so moving on.

Swim

...this and could give you their story Your doctor is really the best person to help with this and is the only person I'd listen to about what to do.

I take one of the longest to cum among their clients. No, I'm not bragging that I last long in bed cuz it's actually a real bitch of a condition and a curse. It's much more fun if I'm able to pop multiple times in any position of choice instead of having to resort to handjobs slobbered in lube.  

I've found that morning hours I can finish easier, maybe due to increased testosterone. Thinner condoms help. Seeing providers who are 'tight' also helps which means greek helps even tho I'm not too fond of getting chocolate dick. Regularly exercising, reducing liquor, reducing smoking, and hydrating the day before seems to help. But this is just my own particular case so take it for what its worth, also keep in mind I'm not on that medication you're taking so it's a different beast.  

Best to talk to your doctor.

of course you need the couch your doctor for the thing and just be upfront you would be amazed at how many people have this sort of situation pet. Also trying someone tight or anal might not be the answer either .... because everyone is different .... Some need it tighter to cum but some don't. Some other ideas are find one gfe you can get comfy with (it might be easier than switching up so much and you can build a rapport with her), trying porn star finish (pull out and jerk off on her) or watching porn while you play. Good luck!!!

Theres pills sold by GNC called "Forta".  I haven't taken any yet.

But its gotten good reviews on GNC's website and people have said it
lasts 2 to 3 days in your system. Its supposed to begin working within
2 hours after taking it.