I recently fractured 2 metacarpals in my hand. one was reset and the other wasn't and is very stiff. is this normal?

Yes: Metacarpal fractures can cause a lot of swelling depending on how they were broken. Proper splinting of the hand in the "safe or functional position" is important to minimize later stiffness. Once fractures have healed enough (usually around 3 weeks) hand therapy can be started to decrease swelling and improve range of motion and stiffness. If you can't make a fist you should get therapy.