Had a aborion 8 months ago and got coil fitted same day since rhen i double up in a month before my period so bad i can't walk or work?

Not sure: I previously answered and had not heard the word coil used for an iud. Some iud's can cause increased bleeding and pain, specifically the copper iud. Mirena, (levonorgestrel) which secretes a low dose hormone should help over time. Go see your doc, a nightly pill can be done but the device may need to be removed. You can also use a pill with the iud, it can help if there is no infection, then you have backup.