Pregnant but husband not ready for second baby

we have a 17 months old baby. My husband and i started talking about having another baby maybe end of next year. Hes not ready for another baby right now. Also financially were not ready. But turns out i got pregnant this cycle. Im happy, but also so worried. I also feel guilty for my son cos hes only 17 months and im scared that he wont get the attention he needs. Husbands reaction was also not the greatest. Was hoping he would be at least a little bit excited? i guess hes just concerned about the financial aspects and our son.

Edit: im on IUD, so this pregnancy is a surprise.