Help!!! Any advice!

I had a m/c on nov. 6th and I was just barely 4 weeks. I started cramping and bleeding on the day my period should have normally started (if i hadn't been testing I probably would never have known that I was pregnant). I went in to the dr that day and they confirmed I was m/cing and I should basically treat it like my period. The dr called the next day to say that my hcg levels were low so I didn't need to come back for any further testing. I ended up bleeding for about 3 days which is a pretty standard period for me. Flash to now - I took a pregnancy test because I've had that 'feeling' and bfp!! I'm so happy yet concerned that it could be leftover hormones. I went through a period of time where I definitely did not feel pregnant and I took a test about a week ago that was negative so I'm pretty sure that this is a new pregnancy I'm just scared to get my hopes up! I know I just need to call and confirm with the dr but I'm also thinking I should just wait it out seeing as how I'm really only a day late for af! Anyone have any thoughts?!? Again I took a test about a week ago and it was for sure bfn and here's from the 29th and yesterday ...