ttc SYMPTOMS??

Hey guys! My husband and I have been "letting nature take its course" with pregnancy. I can't tell if my symptoms are PMS (AF due in about 5 days) or early pregnancy?? 1- sore breasts (worse than normal) since august 3rd. 2- darkened nipple (not areola, though) and 3- head aches almost every day accompanied by dizzy spells/lightheadness. I do feel bloated too but I can't tell if that's PMS. Help??? PS- we've had sex 7 times since my last period: almost every other day since July 26th.