It has been almost 2 months and I have been having massive breast tenderness, terrible stomach and lower back pain, just want to lay down all the time, have become very irritable and want to be left alone. I have took 2 pregnancy tests a month ago and they both came back negative. When the terrible cramps come it feels as though I am being stabbed with a knife in my uterus and nothing helps. Not even Midol. Could I be pregnant and the tests just showing up negative?