I'm now 13 days out my period. I have never ever missed a period before but I'm still getting cramps like its gonna start anytime. I was spotting on christmas day & that's it. 🤔 I don't feel any different, I don't feel pregnant & I'm 100% not having any pregnancy signs, I have just got cramps and a missed period. Is this normal to happen? can you just randomly skip a month?