confused..

Lisa

AF is 3 days late. 2 days ago i was having cramps and now nothing. i took hpt and it was BFN. not sure what's going on. in December i had an ovarian cyst and my right ovary removed. but my periods were normal till this month. i called my doctor and thursday im having a trans vag ultrasound. i could seriouly cry if i find out it is another cyst.