Hi my name is Shy. Me and my boyfriend recently had sex on my fertile days which were Aug 12 to Aug 16. My ovulation day was on the 15. He also came inside me on all of those days. Ive been having really bad headaches that wont seem to go away. I am currently on cycle 20 and Im 4dpo. For the last three days Ive been having back and lower abdominal pains , headaches and constipation. Today my headaches are on and off not as much back and lower pains but definitly there. Followed by tingling sensations in tummy. My next expected period is due on the 28. Ive been taking home pregnancy tests but all came back negative.. Probably too early?? Baby dust to you all. Feed back would be great !