Help!!!

Hey Ladies I have a pretty regular cycle being 28 days and my LMP was Oct 31-Nov 4 Okay? I had unprotected sex on Nov 16th and again Nov 26 (day before AF due). I didn't get my period for that month and I bled two weeks later (Dec 11-14) . My breasts have been extremely sore and nipples sensitive. Hot flashes, in and out of sleep, I had some mild cramping last night and today I've been moody, crying, pissy lol and hungry and sleepy. . I've taken two at home tests the cheap ones and a urine test at the hospital and they were negative. No blood test yet. My next period is due supposedly on the 20th of Jan . What do you guys think?