Worried about starting myrbetriq today. Can someone give me their experience?

So I finally got my prescription after waiting for a week due to shortages. I was put on 25mg to start since I’m usually a little sensitive to side effects. Some things I’m worried about reading previous comments on this sub:

1) losing the ability to relieve themselves, leading to UTIs. I’ve seen this a few times, I don’t believe it’s common, but it’s scary to think about none the less (also my biggest fear btw )

2) increase in heart rate

3) The medication stops working after a few months and leaves you in a worse position then if you never took it.

Just looking to see if these have happened to you guys, or if your experiences were pretty positive!