hello i have irregular cycles.( 30-45days avg) ..i am on cycle day 36. i have period cramps for over a week, a pinching feeling in left side of breast near arm pit and my tummy feels "fuzzy" on and off for about a week! i did 2 pregnancy test this week..and BFN! :( Anyone have any ideas? is what im feeling "pregnancy" symptoms?could i be prego and my HCG is too low to detect?