Tamoxifen side effects

After surgery in March, I started Aromasin. Had diarrhea with that, so started Tamoxifen. I'm having a problem that I'm wondering is a side effect. I have pain like I have a UTI. Burning, etc. But it doesn't have to be when I urinate. I can be doing anything or nothing, and it starts. I drink a bunch of water and take some Azo if it lasts long enough, but it generally goes away. Very Uncomfortable. I have not found this listed as a side effect on the Tamoxifen info i've read, but found it listed on a cystitis page. All it said was that any cancer drug could cause irritation because of the chemicals.

Anyone else experience this or have some information?

I was very lucky and had DCIS are removal, but I'll be darned if there isn't a place again right where the first area was. I get to go back in January and figure out what to do. Fun times!!

Thanks to all, and merry getting ready for Christmas.

Lois in TN