pregnant??

I need some help. My boyfriend and I have had unprotected sex this month a few times. One time was in the middle of my ovulation. I've been feeling a bit off the past couple weeks but I did have a "period". It wasn't like my normal periods I'm usually very heavy and this was very light. Now I'm not on my period and im gassy, having bad cramps, and getting headaches. Should I take a test?