Confused 😏

Crystal
Since Jan I've been getting my period every two wks faithfully , Last mth on the 16th I got my period for 6 days and had sex from the 23rd to the 10th straight. I'm not sure about the number of days in my cycle because my period is so irregular. Last wk I experienced my nipples sore and I had slight cramping more like a pulling feeling in my uterus but so far no period. On the 10th I spotted a little bit after intercourse but that was all. Is it possible I can still get my period or should I take a test ? Today my period is supposed to start. Cycle day 29