I've got my first dose vaccination (pfizer) on nov 04, and have sex on nov 5 (no orgasm) then I have one day mediun spotting on nov 20. My second dose was on nov 25. I am irregular, my last period was on oct 25. Just this morning I got negative result on pregnany test.

That was my first spotting in the middle of my menstrual cycle, i've got pms symptom since my first spotting up until now. Am I pregnant? Or is this some kind of side eefect from the covid vaccination. I am 20.

Please, I need answers.