Hie...I'm Desperately Confused As To My HIV Status...in 2014 I

Hie...I'm desperately confused as to my HIV status...in 2014 I got tested in June July n August ...I wasn't sexually active ..I was found to be hiv negative...I got into a relationship with a guy n he took my virginity I also became preg...a month later I got tested n was positive ...I decided to have an abortion as I couldn't see myself being an able mother since I was sick this ws between february to march 2015 ,I tried threr timed before the fetus finally gave through...my first ever sexual partner is hiv negative ...I keep on getting positive elisa tests ,why is this...even if I was born positive , he is uncircumcised and after having sex for 6months unprotected ...surely he would have gotten infected too?...and I can't have been born positive because all the tests in 2014 came back negative ...I have a frequent running nose n sore throat for about a year now ...my gp says its a fungus infection ,I ddnt tell him about the hiv coz I really don't think I'm positive...the other thing is im gaining weight. ..if I'm really positive shouldn't it be the other way round ...please help me , I once read that ellisa is a bit unreliable but stay in Zimbabwe they are the ones used as they r cheap n quick ...could I be having false positives and what is causing it