HELP!!!!!!!!

I had unprotected sex on the 8,14, and 15 and period was on the 20 of aug. 1st thing my period only lasted 3 days (spotting then light flow then spotting) which is unusual for me. Now on the 4 of sept bubbling in lower abdomen for the last few days. Craving for pickled eggs it was only two days then stopped. Moody today and yesterday. Exhausted for a few days. Very dehydrated lately. Hungry one min then when I start eating I feel stuffed and sometimes feel like it's going to come up, but it never does. Anyone knows what is going on with me I'm feeling confused at that point.