TTC-Late period-Negative Test-Suggestions?

Hey so I'm trying to have a baby with my husband so the doctor put me on medroxyprogesterone to get my period because I'm irregular and I've been taking prenatal (still till this day) I got my period for about 10 days and now I've been having sore breast (some days are more sore than other and some days are very mild to the point where it doesn't bother me) which is weird cause I thought that was suppose to happen before I get my period but I've also been getting headaches and I've been feeling dizzy which is really off for me and cramps also some sick feelings but nothing like puking ( I have a strong stomach) I am 4 days passed my period date and I took a pregnancy test 5 days ago and it said negative. Idk what to do, I'm thinking about just calling my doctor but I'd just thought I'd ask to see if anyone has suggestions for me or maybe share anything similar as of what I'm going through