Burns while peeing

I really don’t know what’s going on.. I’ve been tested for chlamydia gonnh Uti.. all negative. It’s only when my urine is concentrated that it burns. Doesn’t burn bad but it’s a sensation that I definitely notice. Kind of itches from time to time. I’ve token Monistat 7 day but I didn’t finish it all or if I did finish all the medicine I skipped a day of using it then the day after I’d use it again. So maybe me not using the Monistat consistently is causing this?