4 days late

So AF was suppost to be here the 27th. regular every single month since january either the 26th or 27th of every month i start.. here it is the 30th still no period. My boobs started hurting last monday but didnt even start swelling until about wednesday. my boobs got more painful and my nipples started hurting.. they all still hurt. BAD. Ive been cramping off and on since last monday as well and when im not cramping my uterus feels tight i guess and has a mild ache. Last week i broke out with acne on and under my chin worse than it was in highschool i stopped eating all the peanut butter i was craving and they are thankfully healing up. TMI but ive been constipated for over a week and a half now. Im afraid to test before next week. Maybe pregnancy symptoms or period just being weird?