Hello, I Have Been Having Irregular Periods Again Since The

Hello, I have been having irregular periods again since the beginning of this year. It would always/usually 1-2 weeks late. I have been stressed out lately wondering about if my period's going to come on time the next time.

This month, 2 days before my period started I have taken gamma-linolenic acid (GLA) as they say it can be helpful for period. My period came out two days after and it was not as much as before. The first day was heavy as usual and the second day was medium, up to third day it stopped suddenly and came out a little late in the afternoon. After that day they were just spottings. I have to admit, I have been stressed out wondering how my period would turn out and when it suddenly stopped on the third day, I felt panic. My pelvic/vagina and the lower abdomen area has been hving this tingling & pain feeling after doing some sit ups on the fourth day of my period too. Today is the 7th day (there are still minor spottings) and the tingling feelin and slight pain is still there but not as bad as before. But it comes and goes.

Are these all just side effects of my possible stress and the supplement I took and those sit ups I did?