Not excited about baby number 2

Hi! So last night I found out that my husband and I are expecting baby number two. (My period was almost a week late, and I took 3 test that were all positive). I know it should be an exciting time, but we're just not excited about it. I was honestly devastated. Mainly because by the time this baby is born (around the end of October early November) our son will be 2. We just never imagined having another child, especially not this close together. Maybe if the age difference was bigger then it would be easier to cope with, but as of right now it's difficult. Also, I know that there are other options to take if we just don't want another child, but we just personally don't believe in abortions, and I wouldn't want to give my child up for adoption or anything. Also, I was on birth control and taking it regularly so yea this is another reason this is a huge shock. I think I'm mostly just concerned with how will I be able to mother a new born baby and a 2 year old because I feel like my 2 year old will need my attention as well!