... I am confused. My last period was the 18th of April. I had intercourse on the 8th of May. My cycles are usually 28 days. I am now 1 week late for a period, I took a test 2 days ago and it was negative, but now I am feeling nausea and a warm crampy feeling pretty much all day for the last 2 days. What do you think the chances are that I am pregnant? I had intercourse on the 9th of April also but as I had a period on the 18th, I'm guessing if I am pregnant it would be from the intercourse on the 8th of May? I hope someone can help. I'd really appreciate any advice/information you can give, many thanks