I don't know what to think

On May 17 I took a pregnancy test hCG and it came back positive for next day I started my period I had it for the next 3 days and a medium flow. During this whole time I haven't I have felt completely nauseous and I have a metal taste in my mouth I'm extremely tired but at the same time I can't sleep. So is soon as I got done with my period Do to the way I was feeling I decided to take another test and it came out positive. I have taken in hCG test every day since I ended my period and it has still had a faint line I took a digital one by Clearblue easy and it said not pregnant still having all the same symptoms still coming out positive on my hCG ..... What is going on with me i'm so confused.