Rainbow baby

Please help!!!! Please !!! I am due for my period on 11/14 and I had cramps for past 3 days and today saw brownish discharge and also having mild cramps. Not sure what it is. I have an appointment for pregnancy test tomo. I’m very nervous, this month my doc said my follicle size and progesterone was perfect. I still have some time for period. Please please advise. I have been crying today bcuz I saw brownish discharge, spotting. Is it possible to be pregnant? 😓😓