No period for a month only spotting and discharge ?

It also hurts when I pee my periods have always been regular and I been using condom during sex. I have also yellow discharge I’m worried it might be an Sti I used condoms only a few times. It feel irritated and my urine has a smell I’m going to doctor today but I’m worried don’t know if anyone else has had these synthoms. I have had a bit of abdominal pain. The spotting comes and goes it was bright red then brown.