I got the Mirenda IUD inserted about 3 1/2 months ago. Since hav...

I got the Mirenda IUD inserted about 3 1/2 months ago. Since having it I have had nothing but trouble. I have been bleeding almost everyday for the last 3 1/2 months. I probably have had 5 days of no bleeding. I also feel so bloated. I haven't weighed myself b/c I am scared to know but I am bigger now than 6 weeks after I had my baby. My doctor said that this device cannot cause weight gain but I am not a believer. My clothes are so tight and my tummy area is so swollen. I also have started cramping recently. I made an appointment to have it removed on Friday. Anyone have any other suggestions of birth control?