Can I get pregnant again if I’m breastfeeding ?

I know it may seem like a real stupid question. But people have said if your breastfeeding you won’t end up pregnant as quick. My son is 2 months old about to be 3 months soon. So im just curious is it a myth about breastfeeding can withhold pregnancy for awhile. & I know you can get pregnant after just having a child. Im just curious. Because lately my daughter that’s 2 keeps coming to my tummy saying baby in there and kissing my stomach everyday she did that same thing when my 2 month old was in my tummy in the beginning.