Implantation vs. Period cramps

Lindsey

I am 2-3 days past ovulation and I am having major cramps and my back hurts. My cycles are 6 weeks apart so I didn't get a positive OPK stick until 19 days after my lat period. Could this be implantation cramps? Or could it be that my cycle is becoming more regular? No spotting or bleeding yet. Woke me out of sleep last night because it's so painful.

Everything says it feels like period cramps and this does but worse so I wanted to see if anyone has been in the same boat.