advice on sterilisation?

Thank you ork :-)
It is a huge life changing decision but our son has (in the nicest way possible) caused a lot of rifts in my OH family. Most of them now aren't talking to each other or us and when we were talking about moving closer to my family my OHs mother actually said and I quote.... "you can't take my baby away from me, I've got rights I'll fight you for him"
It seems impossible that I'll ever want any more and plus my lil man won't have to share anything ever and hell always have 100 per cent of mummy and daddy's attention xx

Finally all sorted been fitted with a 10 year copper coil :-) it caused ALOT of pain being put in and still after just over 7 hours I'm in a fair bit of pain. Thank you all for your advice and support :-) xx