Wanting a baby girl!!!

So i already have 2 beautiful boys (that i prayed for. I always wanted 2boys close in age so they can grow up together) but lately I'm obsessed with having a daughter. I dont know why, and i hate feeling this way because i constantly keep planing on when i will get pregnant and stuff. Its like im in a battle with my mind. My baby boy is only 3months old and i dont want to try to have another child until he is 18months because i enjoy him so much and i know pregnancy will only mix up my emotions. I cry everytime i tell myself to wait until he is 18months old like what is wrong with me, i get so annoyed with myself! Just dont know what going on with me (Oh and it doesnt matter if my next baby will be a boy too, the gender never really mattered to me i always wanted 4kids whether its boys or girls or both)