advice plz help

it says I'm 6 days late I been nauseous and off and I'm have been dizzy and tonight me husband had sex got dizzy and day before yesterday I had been light spotting like very light or didn't look like period it stop the. hus9had sex and after the spotting came back and it very light and small but I haven't had cramping or anything..the test I been taking are neg but at night idk if that makes a difference and they are dollar tree bout clear blue but when should I take it. if it neg I don't know what to do next