Could I be Pregnant?�?

I have had unprotected sex a few times in about 2 months with my bf. I still get my periods but the last 2 months I been getting them anywhere from 1 to 2 weeks early. (and yes some women still have periods during pregnancy so please dont comment saying ive had mine im not prego cuz its a possibility). Ive also had menstrual like cramps even when my periods not due and frequent headaches along with neckpains and back pains. I threw up for 3 days in a row all random times in the day(mainly when I wake up) I been getting extra tired lately and been eating like.i been starvibg. Also a lil constipation tmi I know. I work alot so by the time im off work clinics are closed and theyre closed mondays where I live. Any suggestions in the meantime until I can get to a clinic?