Missed two months period..pregnancy symptoms.. pregnancy test all say no . could i be pregnant?

You are not pregnant: If you have not figured out why you are not ovulating then it is time to get to the gyn office for examination and testing. Pregnancy tests are very accurate and two giving you the same answer is enough proof that you are not likely to be pregnant.

A pregnancy test: Should have been positive before now if you were pregnant. So, no- you shouldn't be pregnant from sexual activity prior to last period. Reasons for missed/late periods: low body weight, obesity, marked weight ^ or v, over-exercise, endurance athletics, breast-feeding, ^ stress, illness, eating disorders (bulimia or anorexia), anovulatory cycle , ravel, hormone irregularities, med or med conditions.