My sister in law didn’t and had more hair loss and weakness trying to work out, but I am not sure if it’s connected. She said she felt it was, because I breastfed and took vitamins for 2.5 years and never had any huge pp symptoms
I take the baby blues postpartum hair vitamins and their vitamin D3 and it's been worlds better than with my first baby (I took them with baby #2 too) Their hair ones are lifesavers
My doctor advises continuing to take your prenatal for at least the fourth trimester.