Too early?

Shelby • 25 yrs old... Mom to two beautiful baby boys & 3 angels. praying for H&H third earth baby
So ever since we found out that baby#2 is a boy I can't stop thinking about baby #3.
I really want to have three kids because that's what I have always wanted.  I'm probably nuts for thinking about it but I feel like we should already be planning on when we feel like we should try for #3, so that it's one less thing to worry about later. Please let me know I am insane because I don't think it should be normal to plan another pregnancy while my bun is still cooking???!!!!