HELP STD OR PREGNANT

Hey ladies my period is 7 days late and I took a pregnancy test on the 5 day and it came back negative. Can a STD delay your period???

My bf has discharge coming out his penis I think he’s stepped out

*** A few weeks back I took like 5 melatonin pills hoping that I went to sleep and never woke up it didnt work”. Help please I dont have health insurance im 22