i was just unfortunate enough to stumble on an article on the huffington post website claiming that cryptic pregnancies are relatively common, especially when the mother is under extreme stress. I would consider myself to be under extreme stress due to the constant worry and fear about being pregnant. If I had become pregnant from a sexual act that took place on April 20th, and have had four LONG and very heavy periods since then as well as at least ten pregnancy tests (the most recent being in early July) that were all negative, is there any chance I could be pregnant? I have put on some weight lately and have had headaches every day for months. Occasional nausea but when it does happen it is very early in the morning, like around two in the morning. But my periods are all regular and heavy and arriving right on time and I have taken so many pregnancy tests I honestly can't give you a correct estimation (at least ten) so with all that could I still be like four months pregnant?