Pain after peeing

Okay ladies.. I've seen a urologist since I was 10 due to kidney stones and surgeries,etc.. and he thought when I seen him last year that I had interstitial cystitis (IC) but never officially diagnosed me with it.

Well I went to the OB on the 12th.. and since I was having pain after peeing and sometimes felt I had to pee but couldn't he checked for a UTI but it was negative and he even sent it off to the lab and it was still negative.

I go back to the OB on the 26th so I'll mention it to him again but just curious have any of you ladies had pain after peeing/felt like you had to go but couldn't?

The only time I've had this issue is when I've had a UTI or kidney stones.. but I know it's not a kidney stone cause I've had plenty of them to know the difference and I've had no back or side pain. I'm 15 weeks pregnant and I've been experiencing this since about 12 weeks.

Sorry for the long post.. I appreciate any input or advice. Thank you!!