1. Take some time off to let them completely heal. Easier said than done, I know. Once that's over pay special attention to hygiene. Not saying you aren't now, but it should be mentioned.

2. Make sure you have good shorts that fit will. It sounds like you have good brands, as long as they aren't old and worn out.

3. Check your fit.

4. Try a different saddle.

I speak from experience.