As much as he says he's okay with it, I know that he is not. Additionally, he's not happy with his career right now and is trying to change it. I don't want to add more pressure and it just seems like it really doesn't matter that I got a raise. I keep telling myself it's okay to withhold this information, but somehow I feel like I'm being dishonest. Please give me some advice.
Every marriage is different.
All I can tell you is that you certainly have nothing to be embarrassed about. It seems like you are totally committed to your marriage and are simply being prudent. The truth is, I think it strengthens a relationship when both parties have a bit of financial freedom. Of course, it would be different if some emergency arose and you denied having any funds to help. It doesn't sound like that's where your head or heart are, though.