I have only had Mirena for a few weeks, I have been bleeding dail...

I have only had Mirena for a few weeks, I have been bleeding daily, cramping daily, all day, I've had headaches constantly. I have a 3 month old and an 18 month old and i feel some days I can't get up with them because everything hurts! I've only had sex once and it didn't feel right and I began bleeding heavily right after so I don't even want to do it again.I've been sleeping in the day, when I work out the cramps get worse and Im craving junk food, which I normally never eat! I figured I would give it a month and then these feelings would go away...now after reading this I'm not so sure. My month appt. is coming up and now I think I'll just get it removed. My periods were never bad and now I just bleed at different times every day...it sucks!!!!!