Am I being ridiculous?

My Fiancé and I have a daughter that is 5 months old, she is gorgeous and amazing. I love her to death. But.. My Fiancé wants to have another baby.... already. He keeps making plans for another baby and wanting to have sex all the time. He checks my ovulation schedule and everything. The problem is he decided he was ready for another baby but he didn't even bother to ask if I was ready. Im the one who has to carry the child. My 1st pregnancy was not so easy there were a lot of bumps and when my daughter was born she was so tiny. It took months to get her where she didn't still look like a newborn. My little girl means everything to me but sometimes like all kids she can be a bit much. We are about to move, its almost Christmas, he chose now and its the worst possible time. Im not ready to restart and possibly have to deal with another complicated pregnancy. He didnt care what I wanted though.