Hlp with pregnancy...maybe?

My period started on dec 2 or 3 it usually comes on the 5th. It went off. Dec 7,8,or9th. I had unprotected on the 16 & 17th of dec It only been one week and I'm having clear white thin discharge with a light sent. Headaches and was nauseous 3 days after . My next period isn't till the first week of january. My pelvic area has light cramping and sometimes I feel full or heavy its hard to explain. My start hurting today dec 23 not super painful just mild. I don't know if its pms or time to be a mom! When is a good time for me to test?