TWW cramping?

Li
Second month TTC. I had sharp pains start to develop 5dpo (I used the sticks to determine ovulation) and, at 9dpo, still dull, achy cramps...just above pubic bone. Not something I have normally felt at this point in my cycle...usually days before AF which is not due until Feb 13/14 - another week! 
The reason for my post (and my immediate freak out) was Glow giving me an insight after logging my symptoms that endometriosis might be the cause. WHAT? Although my common sense tells me that at 30 years old with no real previous symptoms that it's a little overkill - wow - surprised, flabbergasted, and a little angry.
Anyone else experience a long duration of cramps during their TWW?  With a BFP?