uterus is tender!

I'm 10 weeks pregnant and I'm having pain or pressure I don't really know how to describe it.. I think my uterus is sore, when I push on it I feel it more intense and I feel tightness it's only in my pelvic area .. I don't think it's round ligament I read up on it and I don't seem to have that kind of pain... but it's very uncomfortable and I have to lay down when it happens.. should I be worried? I had bleeding for 2 weeks at the beginning of the pregnancy but the baby was ok..