Today is day 8 of my current cycle. This time I had light bleeding which lasts for only 2 days. First day was more kind of spotting and second day was light bleeding. I had severe cramps and back pain for 3 days. Now since yesterday I am having very mild abdominal pain and thick cm. Last month immediate after my periods, I took 2nd dose of COVID vaccine. Now I am confused that the light period and now abdominal pain and thick milky cm are side affects of vaccine or are these symptoms of ovulation or that I am pregnant? I am not in a situation right now to have an ovulation or pregnancy test. Very confused. Please guide and help me.