Blazing opk + AF 11 days early orrrrr???has this happend to anyone before?

Ttcbbnum3

Ill try to keep this simple . im dye for AF in 10 days . first on 9/16 i woke up to the lightest pink spotting. I shrugged it off . "may be implantation" went about my day lets skipp to day to now its without a doubt pink and yes .. Im spotting at this point. Next day its like my period is starting with these really really horrible cramps. Stronger than when AF shows but mostly in the morning and then when i went to bed . Today same cramping earlier. Same bleeding . its not super heavy but enough to wear a pad. And its weird sometimes it only there when i wipe. Anotherr thing i found weird i took a opk just to see . and it is blazingggg positive . the first line took some of the dye from the control line . i know i have to wait until im closer to AF to take a HPT but this is sooo weird to me . a very early period? Maybe ? Has this happened to anyone and what was the outcome ?. Also what could this be ? I think the last time this happened was atleast 12 years ago. With a period showing up wayyy too soon.