Pregnancy day before period?

Has anyone gotten pregnant the day before period is supposed to show? My boyfriend and i ttc on 7/3. I was supposed to get my period 7/4 and i did later that night at 9pm it was bright red/pink the next morning i had nothing on my pad and when i wiped it was clear and brown blood. Then peed a couple after that and nothing when i wiped. Could that have been implantation bleeding a day after ttc? So weird. My periods usually are never like that and come on heavy and a lot the first couple days.