Spotting after two years on letrozole

Hi yesterday I felthink as though I did when I had my periods a bit achy in my low abdaman and this morning I have had a show of blood. Is this common and should I not be panicking?

Suzie,it’s very probably nothing to worry about,I have read quite a few threads re this topic and most seemed to turn out to be nothing to be worried about ,but you should get it checked out nevertheless,meds can cause changes to womb lining.