Pregnant cat with cracked nipples

Ok guys my cat that was a boy but found out he is in fact a she with babies on the way. Not the most ideal situation but the babies were too far along to abort. So we are waiting for her to pop should be any day now, I have been checking her belly and nipples mainly cause I know with horses just before they foal their milk comes thru so I am fairly certain that happens with cats? correct me if I am wrong hehe

But I think with her big belly she can't clean herself that well and her nipples are looking a bit cracked and sore should I put anything on them? Or just leave it? I just know that when she has the babies they won't get any better and if I can make the situation better before the babies come it will make her life slightly more pleasant.