I'm not very regular I usually have a 3 day period every 7-9 days but I had a good heavy 6 day one not last week but the week before... Yesterday I had light bleeding pink/brown... Now it's just brown and stopping ... We've been bd'ing every night or second night this month ... Could it be implantation bleeding ?? Glow says I have a week till my period but it was 2 weeks till I wrote I had spotting ..