Baby Fever

I have a 9 month old son and really want to try and wait 3-4 years before having another one, but I have the biggest baby fever and don’t know how to get over it.

I want to have as much one on one time with my son as possible and just enjoy him for a little while before introducing another child to the family, but every time I see a pregnancy announcement I wish it was me. I loved the whole experience of being pregnant and miss all the movements, but I know that waiting a couple of years is the reasonable thing to do (for our family, also from a financial perspective). Ugh, how do I get over this feeling???