Have a serious problem with cereal.. help

I’m 36 weeks and for the last month or so, I’ve been addicted to cereal. I’ve went through probably 15 entire boxes of cocoa pebbles in the past 3 weeks. I eat 2-5 bowls a day. I ran out 2 days ago and ate an entire box of fruity pebbles since then. It’s a problem because of how much money I’m spending on cereal. It’s wasting. But if I don’t have it as a snack, I’ll truly get upset. I don’t know what to do. I’ve never had any weight problems, I actually have trouble gaining weight and have only gained 11 pounds in my pregnancy. I’m starting to feel really disgusted with myself. Ugh! Please tell me this ends.