Annoying

So I went in today because I had a light positive, negative and another light positive tests and spotting 4 days before missed flow but never a flow because I messed up and missed my patch and such...got a negative at the doctor but since we us the withdrawal method and no protection besides that she wants me to see if I get my period and since we don't know the actual day I am supposed to get it cuz everything is messed up right now...if I don't start bleeding by the 15th I can't put my patch on the 16th but if I do I can start a new patch the 16th...otherwise she wants me to take another pregnancy test on the 15th if no bleeding occurs before then...ugh