Hello, I had a few questions that I needed answered and was wondering if anyone could help. I have this app on my iPhone that helps me keep up with my periods and when my most fertile weed is and when I ovulate. It showed that my fertil week was March 19 - March 26th and that I ovulated on March 25. I had unprotected sex March 19th, 21st, 22nd, and 25th. The only thing that ever got in me was precum though. However today I'm noticing a very light spotting that brown almost and very slight cramping. It's not very painful just uncomfrotable. My period isn't due until April 8th, but I was wondering if it sounded like I was experiencing implantation bleeding and cramping. Any information is useful(: