So for the past week or so, I've been having lower left pelvic pain(it's pretty much gone away now) I've been nauseous, very sensitive and moody, I'm bloated! Pee constantly and my breasts and nipples are so sore constantly. They look like they're changing. And my cervix is hard, closed and low. What could it be? If not pregnancy? I'm only 6DPO now. Could I have ovulated earlier than what the app says?