Missed Period for 2 cycles, Neg PG Test...

Go see a healthcare provider. If you aren't pregnant you need to be worked up to figure out why your periods have stopped. If you can't get in to see one right away, another thing you might want to do while waiting is have a blood pregnancy test done. You can arrange to have that done yourself through the on-line service Private MD Labs. You order it with them on-line and pay them by credit card, then you print out the requisition and take it to the lab.

I didn't know she had had an ablation. An ablation by itself can cause amenorrhea, so that could well be what is going on.