Help?

So me and my husband have been ttc our 2nd child together for over 5 months now, I was on the IUD for about 3 years been trying ever since. So I was supposed to get my period today (I always get it on the 23rd early in the morning at around 5am. And the day before I spot. Exactly the same every month. I woke up and no signs of AF. I was having some mild pains in my lower back and belly this morning as well as some sharp pains the past 2 weeks on and off. Super hungry all the time, sleepy as hell, and moody. Also some sore boobies. I took a clear blue test 6 days before my missed period and it was negative. I'm wondering what y'all think. Should I wait for AF or test? I'm just confused why AF isn't here unless i am prego. Has this happened to you? Thanks ladies.