It sounds very likely that it was the peas, but the best way to tell is to stop them till all clears up and try again. I agree with the pp about letting your lo's skin get as much air as possible. I have never heard of sudocreme, what my son's doc recommends is Calmoseptine. It's not prescription but you do have to ask for it at the pharmacy counter. For us, that was the best. A little pricey but totally worth it, and a little goes a long way. Good luck, hope things get better soon.