Urge to pee.. but no pee!

Hi all!

I'm currently 15 weeks today.

Last Saturday I got some pain in my bladder so I went to the doctor incase of a UTI. The test results weren't definite but did show white blood cells in the urine so I was put on amoxicillin.

I've had UTI's before but this time there was no burning or pain when urinating, just the aching bladder and frequent need to pee but not passing much/anything.

It's now almost been a week and my course is almost up, the pain has gone but I still get the urge to wee whenever I'm standing, but when I go there's hardly much at all!

Has anyone else had this? Is it possibly just the baby putting pressure on my bladder making me feel the need to empty it?

I've also got thrush from the antibiotics but I doubt that would be doing it..

My ob gyn and midwife are gone for the weekend so I can't contact them :/