I certainly did find my libido dropped for a while after the birth of each baby. Nonstop physical contact with an other person, you get "touched out" and when that kid is asleep, you just want to NOT have to touch someone! Also, lack of sleep can certainly wreak havok with your sex life. I remember thinking that an hour of extra sleep would beat out sex when my kids were really small.
My kids were NOT good sleepers (none of them "slept through the night" until after a year) I breastfed my kids for years each, (the first one only 15 months, but it's still a long time) and my TIME was taken up with child care.
Not that My Man was ignored. In fact, he reminded me that when our youngest was only home from the hospital a day, I was sleeping on a blow up mattress on the bedroom floor, because of the C Section I couldn't get into our bed, I was in pain from the C Sec, from sore nipples, from a chunk of tissue which was ripped off when they removed the sterile cover after the C Section and the tissue missing was RIGHT where my leg bent at the hip, I was in PAIN. But, he said I got the baby to sleep, put her in her Moses basket, and said to him. "Somebody needs a blowjob!" then proceeded to pleasure my long suffering Man. I barely remember this, but he said it is one of his sweetest memories.
I can understand how one's sex life will suffer after the birth of a baby. My doctors never asked, in the old days, we just used to suffer silently.
Taking care of small babies is a LOT of work it's actually exhausting. But, keeping some connection to your partner is also important.