My period is due to start on Friday. I started lightly spotting yesterday and it's brown. I've been neaseous and certain things are making me feel like I need to vomit. I even threw up one morning last week. Ive also been super hungry. Could these be signs of pregnancy? I had a miscarriage in April so my periods are still out of whack and I can't really go by my period being late as my only indication..