2 DPO & Cramping

Hi everyone! I’m 2 DPO and out of nowhere tonight I had the worst cramping to the point where my husband said ummm are you in labor and we didn’t know you were pregnant?!? Of course he was kidding but they took my breath away and lasted a good 10 minutes. Anyone ever experienced this? I also had back pain too. If it also helps 2 days before I was ovulating I had a lot of stretchy CM more than I ever have in the past while TTC and we did baby dance both days I had it.