False Positive?

KB
So, I took a pregnancy test yesterday that came back positive. Caught me off guard due to the fact that I had what I thought was my period March 7 so it's WAY too early for positive pregnancy tests. Well then I took two more yesterday that were faint and then this morning I took two more and they are VERY faint. Am I miscarrying? This is my second pregnancy, and even with my first I had issues with a positive pregnancy test. So maybe I just don't create enough hcg yet? Help me please! 

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