...you lose some.
Right now, I'm losing a whole lot of hair. Every time I brush I can make a little bird's nest from what the brush pulls out, I have to clear the shower drain daily to avoid clogging, loose hairs hang long and tickle the backs of my arms, and the baby always seems to have some of my hair wrapped tightly in his little drooly fists.
I've been through this before and I know it's normal and that it will balance out as it adjusts to normal levels of shedding. Still, I'll be happy when it stops.