iam 38 years old,iwas on depo provera a year ago,started taking microgynon 30 but came off 6 weeks ago hoping to get pregnant.iam married and i have been having unprotected sex,i missed my period 2 weeks ago,iam having slight lower abdominal pains,very annoying hot flashes back aches and headaches.i did home pregnancy test which came out negative twice,what could it be?