Lacking off

I’ve heard that when you give birth or so some girls are just too tired to have sex or not feeling it anymore I don’t get it I gave birth 3 months ago and I haven’t lost the feeling of having sex what about you after giving birth what were your experiences and not even when I was pregnant I lost the feeling of having sex with my husband if I can do it everyday I would lol but I have my son and sometimes he stays up late since he can’t sleep or he sleeps with us for awhile until I can get him to sleep him in his crib