I'm resorting to the CIO method, got any other tips?

I hate to do this, but I am down to my last nerve and so is my husband. Our six month is teething but I know that isn't the problem because we use tylenol and baby oragel, we do everything else we can possibly do for him. I am going insane here. He just now started sleeping 11pm to 5 to 6 am and then he might take a nap or two during the day and these are extremely short naps. So as a result of NO SLEEP or not enough sleep he whines constantly to the point I get extreme migraines. I can't take anything for the migraines because I'm 9 weeks pregnant. I never planned on getting pregnant this soon, but it happened so oh well. I am starting him on a schedule tomorrow, this means nap time, eating times and bath time. So if anyone has any suggestions, besides calling his doc, because we have done more than once, then could please help me. I am in tears and stressed out from all the whiny. I just don't know what else to do and neither does my husband.