How soon is too soon!

My husband and I had a perfect baby girl in december! ... But we are already wanting another baby ...  Neither one of us have really
Came out and said it , but we are always talking about when we have another baby, or when ever I'm pregnant again..  I don't wanna rush things .. And I want time
For my baby girl to be the baby..  But then again I don't want them far apart... I  keep saying next fall.. Then she will be 2-1/2 when the new baby was born... I just ... Idk  how soon is too soon?