Hi. Yeah. I'm over 23 weeks & have been like this for a while now. I try to always wear padded bra's. They are a bit protective.
When you start leaking colostrum you should spread some of this over your nipples & let them dry out in the open air. It will toughen them up & if possible get them out in the sun. Rememeber this when bub's born too. It can help.
You can also buy lanolin, sheeps wool oil to do the same.
Good luck girls.