What is going on???!

Okay, so my husband and I have been TTCing this month and I don't know what's been going on recently with me... According to glow, my ovulation date was a couple of days ago. During my most fertile times, we BD almost every day. That was this past week. Right after my most fertile day, I had a pain of sorts in my uterus area. It wasn't sharp or anything but just kind of there for about a day or two. Now I feel fine, but I don't know what that was. Was it just ovulating or implantation? I'm going to go see my OB/GYN next week, but I didn't know if anybody here has experienced that before. I'm hoping that was implantation, but I don't know...