So the first day of menstrual period was sept 12/12. My husband and I had intercourse on sept 23/12 (he works out of town so we don't have a lot of time together). Today sept 25th, which is day 14 of my cycle I'm having low abdominal cramping and almost a feeling like pressure being placed on my belly. I thought I was pregnant last month as I had a very heavy period that only lasted 2 days and then turned into a brown discharge for three days. I took a home pregnancy test but it came out negative. I'm 36 and I know that my days are limited the older I get. Has anyone experienced this 2 days after intercourse??