cramping

Angelea17

So glow says im currently 13 dpo and my period is tomorrow (i have irregualr periods so i dont trust it) but last Wednesday night (the 14th, 8dpo) i wipped and there was a little spotting and that morning it was brown and when i went to work around 4 it was gone. I suspect implantation bleeding because ive never got random spotting before. Yesterday while i was at work i kept getting very mild, what felt like, period cramps. Glow says i should test Thursday if my period hasnt come so im probably gonna test then and if i dont get my period by next thursday (which is when i suspect imy period to come around) im testing again. Do you think theres a chance i could be pregnant?