Ladies I need help!!

Since July 1st I have been experiencing pregnancy systoms. I have taken a lot of pregnancy test from all sorts of different brands. Some come up as a big fat positive, faint postives, and negatives. July 7th I went to the my local clinic and they did a regular pregnancy test and it was negative. So they did a blood test and there were faint signs of a pregnancy. My doctor believed it was a chemical pregnancy. Well I’m two days late for my period, still having pregnancy symptoms, still getting faint positive and negatives. Im skinny person and I’m starting to get a belly and my stomach is starting to get a little hard. What is going on? Has this happen to anyone else? Should I go to my obgyn? Im just so confused.