I just purchased a Lunette Model 1 and it arrived today. Yay! I want to take it on a dry run before my period in a couple of days but I've got a problem... The instructions say to boil it before first using, but I'm in college and don't have the ability to boil water in my room. I've got a microwave, but that's it. Can I use it after just cleaning it with soap and water or do I need to wait to boil it before I use it?