i always feel like i need to pee

[abigail198]

So about a year ago i was on the train with a friend going to the city when i needed to use the bathroom. Usually i would just hold it and wait till we got there. However, i started to bug that i wouldn't make it and i told my friend we needed to get off the train. We got off and thankfully i made it.
After this incident though i started to be paranoid that i would be stuck somewhere and need to use the bathroom and there wouldn't be a bathroom to use.
Since then it's only gotten worse. I started to drink less hoping that it would help, but now im concerned about my health.
I get nervous to take the train or go on long car rides,especially with people i don't know. I'm always nervous ill pee my pants and ill be embarrassed.
I get nervous about being in assembly's where it would be uncomfortable to walk out.
I feel this is taking over my life.
I'm constantly thinking about it and it's hard to go out and do things that i want to.
Although it's related to anxiety, i think it's a real medical issue. I've been to a couple of doctors and there hasn't really been any change.
I'm seeing a therapist but so far not too much help with that.
As well i was prescribed medication
for the anxiety but im too afraid to take it due to side effects that i feel will only make the anxeity worse.
What do i do?