I "fooled around" on 30 May, 1st day of my green week (only according to iPeriod app). Penetration was not all the way in, but we are fairly certain there was pre-ejaculation. However, I have had sore breasts for a week (completely unusual this early in my cycle), slight cramping, and hunger beyond satisfaction. I'm not expecting my period for 9 days (day 21 of my cycle and about 6dpo), so it's too early to test, but I am starting to wonder quite a bit. I'm pretty certain it's mental, but what are the chances that fertilization took place and that symptoms would even be obvious yet?