To wait or not to wait??

A couple months ago I was not having a period I took pregnancies test and they all came back negative. I went to my doctor and he gave me a prescription to take to help me start my period. I've had to do this in the past and I knew what to expect with the medication.  A week after I stopped the medicine I started my period like I was supposed to however unlike the other times I have take. The medicine my period was fairly normal, everytime before that it was very very heavy. I didn't think anything of it I was just happy that it want a bad one.  I have missed my period again for the month of November and now I'm at the point of try g to decide should I take a pregnancy test or wait a little bit longer.  The only reason I keep going back and forth about it is bc I want to be pregnant and I am tired of becoming upset everytime I see a negative test, however if I'm not pregnant(which unfortunately I do not think I am) then I will need to contacts dr about a refill for the prescription so that I can try to get my cycle going again...any advice???