Sorry I know this has been donee like thousands of times but I am sorta concerned. I have had unprotected sex in september and october and on the 12th I had cramps and brown spotting. Tho last month I had my period on the 17th and I've always been regular. Normally my period is really heavy from the start but last night I didn't even bleed untill today which is now a bright red . When is a good time to take a test and how long can impantation bleeding last and how heavy, P.S: I am also a plussized girl