someone help?? 😞

About 2 months about I took a few pregnancy test as I was late on my period and all 3 came back positive. About a few weeks later me and my boyfriend had sex and I started bleeding. I talked to a few people about it and was told I would have had a miscarriage. My period didn't last long and it was very light. I have now moved home and my period this month hasn't came at all and I am stressed and confused? 
I feel like my period might just be late due to stress but I am only 17 and having been told I had a miscarriage has been harsh on me (as it would most people) 
But I never went to the doctors to find out if I really did have a miscarriage...? So could I possibly still be pregnant?