Help! Pregnancy symptoms (early)?!

Hey! I hope someone can help me out! Me and my significant other have been having unprotected sex for going on 4 months. i got my period last month, but it wasn't like my usual period. Usually my period is somewhat heavy flowing and lasts 7 days! This past month my period was not heavy at all and only lasted five days. Two weeks later, recent time, I started getting pain in my lower right abdomen and it has been moving towards my back. Not painful pain but more or less little aches. Also, I got a constant headache last night and this morning. I have to pee more often now. I've been nauesous. I almost blacked out a couple of days ago due to dizziness and I'm very tired a lot. Should I test?