Worriedwife,
I got this disease at a young age as well (29) and having the support of my wonderful wife was one of the key things that has gotten me through this. Here are some things you might want to consider:
1. Many urologists do not have a thorough understanding of Peyronie's disease. You will probably need to get a referral to a male sexual health specialist urologist, such as Dr. Tom Lue in San Francisco or Dr. Laurence Levine in Chicago. These aren't the only two specialist, but many here on the forum have seen them. I went to Dr. Lue last year and it was a very positive experience.
2. Ask the urologist for a prescription for pentoxifylline. This is a medication that helps stop the inflammation that causes the formation of scar tissue and can help reduce the pain associated with the disease. Pentoxifylline has not been tested in large studies, but several prominent urologists have done limited studies on it. You can find two such studies here:
http://www.peyroniesforum.net/index.php/topic,772.0.html You should print these out and take them to the urologist.
I was on pentox for abut 8 months. It completely got rid of my pain although it did not reverse any physical changes. (My physical changes are relatively minor, fortunately).
3. This is not your fault AT ALL. But having said that, be cautious during sex until your husband has been to the urologist. Don't do anything that causes pain for your husband and use lots of lubrication. Many urologists will discourage girl on top due to the propensity for injury. It is important to note that getting erections is a GOOD THING and that your husband should not worry about having them. Good blood flow promotes healing. In fact, the urologist may prescribe low dose Cialis or viagra to maintain good erectile quality even if your husband does not have erectile dysfunction.
4. Have your husband come to the forum and learn all he can about the disease. Overcoming this disease will take the both of you working together. I know it's scary right now but things will improve as time passes by (it did for my wife and me). It's possible that your husband has a mild case that will result in nothing more than a few indentations and some unpleasant memories. Getting treatment early helps prevent inflammation and the formation of more scar tissue. It's this scar tissue that causes curvature and deformity (hourglassing) because the penile tissues do not expand properly. Proactive early treatment is very important.
I'm sorry you and your husband have to deal with this but this forum will provide ample information and support during this difficult time. Best of luck and feel free to ask questions any time.
-Skjaldborg