Well my last cycle started on 26th of June and I did a monthly cycle calculator to see when my next cycle would start. It said I should have started on the 24 or near the 24 th and it still hasn't came yet but I've been having mild cramps. On the 5th of July I had a very bad upset stomache for two whole days. Then on the 17th of July after I ate breakfast and lunch, my stomache started cramping and then I started throwing up which lasted for 3 or 4 hours. I've been keeping bad headaches and have dark rings around my nipples I also took an online pregnancy test and it said I had a 59% chance of being pregnant. I also have two kids, one is about to be 5 and the other is 6. My second child was born in September 2007 and I had tubal ligation in October 2007. I know I should take a test but I haven't got up the money yet to buy one. What do you think is going on? Thanks! I appreciate it!