Crampy for days

I am still 9 days out from my period. I have been period like cramping (off and on) for 4-5 days now. I have noticed my breasts are some fuller and tingly at times. All these things are NOT normal for me at this point in my cycle. My question is, how many of you have been experiencing DAYS worth of cramping? It’s not painful—just achy cramping. I know I shouldn’t have tested this far out, but I did bc this has been going on for 4-5 days now. It was negative. I have 2 kids already and have been down this road before, but don’t remember being as crampy for this long... all signs are pointing to possible pregnancy, but still an questioning it. Anyone have anything similar? Thank you!