I did in the beginning because I leaked constantly. For a few weeks post partum, if felt like if I sneezed I leaked everywhere.
Around 4 months, my supply leveled off and I no longer wear breastpads at all, not even at night. With my first child, I had to wear pads for the full 12 months; the milk just never quit coming!
I would just make sure you get one that is very breathable (no plastic backs) that has a sticky tape part to stay in place in your bra. If you're at home exercising and they bother you, just take them out. So what if you get a little milky?
Exercising with breast pads
I use the Lansinoh ones, I find they are really absorbent and very breathable. I don't usually stick them down unless I'm exercising, then the sticky becomes necessary or they bunch up in the middle of my bra or underneath my breasts. I tried using reusable ones with my first and I just produce too much milk, I'd have them soaked through in no time at all, even after my supply leveled.
Because I ended up with rather sore nipples so I figure they must have been rubbing (although I would have thought my nipples would be pretty touch now with the way my monster eats them!).
