so i had my period about the 15th or 16th of june and and i had unprotected sex the the hole time i was on it and like a week and half after ever day sorry if to much info but im two or three days late and my boobs are really sensitive nipple look darker and boobs fill more foolr.i had some cramping before my period was do. now i feel pain in my lower stomach for a few days now nothing bad i have had more head aches then usual i go to the bathroom a lot more i have been having a lot of gas to and i took a accu pregnancy test and it said negative so i waited a day and took the other one and it didn't work right it also said on the box to wait untill the day you missed your period and im nervous to take another pregnancy test i wanna be do you guys think it was to early or what....please help