I had unprotected sex on my exact ovulation date, my boyfriend did ejacuate inside me.. I had implantation bleeding and heaps of stomach cramps (minor only) i have had a series of headaches that cease for an hour and come back. Normally my period is medium flow for 4 days and then light for 2. I started bleeding extremely heavily for 2 days straight and then had light spotting for a day 10 days after my ovulation date. I am still experiencing stomach cramps although not as many, the headaches cease for longer but still come back, i am extremely bloated and I am pretty tired. I have done 12 hpts and had all negative results and I am currently waiting anxiously for my blood test results. I am always thirsty but my appetite has decreased rapidly and I am having some strange dreams, in fact sometimes during the day, I think about my dreams and then I cant remember whether it was a dream or it really did happen. I have also been crying at the drop of a hat. My job, which I normally enjoy, is now a drag. I went all the way to the post office this morning only to try and stick the wrong key in the hole, i had to walk all the way back and get the right key. when I walk more then 500metres my legs feel very sore and tired. Am I pregnant??