Advise plz. Nervous

Im maybe 9 DOP i.dont know when i ovulated exactly, thats just.going by the app. Last weekend i spoted for 2 days, and it was pinkish colored when i wiped. Wasnt planning on having a baby, but after dealing with cramps and nausea for the past few days, im almost gonna be mad if im not preggo. Ive felt miserable these last few days. My husband and other kids are hoping im pregnant. I jumped the line and took a 6 day early Clearblue test and it said not pregnant. My period should be starting on monday. Im 38 yrs old and im sooooo nervous. If my period comes i think im gonna cry. What else could cause nausea, cramps, spotting, dizzyness, extreme tiredness but unable to sleep....