Feeling the weight, too early?

So I just got up from my chair a minute ago and could definitely feel the weight of the baby against my nether region. I am not hurting, cramping or anything but I feel the baby a little low. Has anybody experienced this so early? I am going to be 15 weeks Monday. I definitely have felt this before in my last two pregnanciies but I feel like I was more close to 20 weeks.