Mirena and bad breath

I started the depo shot in June 05. Had it for 6 months, blead the hole time and gained 35 lbs. So in Dec 05 we took it out, decided to try for a baby - which we didn't conceive till jan 06. after the baby was born in oct 07 I had the mirena put in. I have been feeling fine until the past maybe 8 months and it just keeps getting worse. I am so tired all the time that I just don't want to do anything and it is really difficult for me to even take care of the house and kids. My acne is awful. I have the worse headaches ever. I've recently developed more symptoms. - feeling nausea, really bad dry eyes, stomach spasms. I do have a light period every month but i actually look like i;m 4 or 5 months preg.