Possibly pregnant?

Ok. I'm currently TTC. We had a miscarriage & Drs gave us the go ahead to try again. We had sex basically everyday for a cpl weeks. My AF is expected on Thursday. Since then, I feel nauseous in the mornings & at night. My boobs are not super sensitive. My nipples are not either, but a dark ring around the nipple is almost present. I had mild cramping, nothing severe& CM is egg white, with some stickiness.