Should I take a test?

Camille

I know it’s hard to tell from symptoms but I’m 9DPO and having tons of cramps and lower back ache but no IB. I’ve also had a huge increase in CM. I was using opk and know exactly when I ovulated and we BD’d every other day before then the day of and the day after. Should I test or wait? Also has anyone turned out to be pregnant after having tons of cramping, lower backache, tons of CM 6 days before AF?