hi there nancynew i'm sorry to read about what youre going through, and i do know how you feel. at four months post natal i was still in pain and it was horrible. my first reaction is to ask are you sure there's an infection? i mean, as suggested above, have you been swabbed? because at my 6 week check the dr said to me well if i'm still in pain i must still be infected (having had my episiotomy open on day 9 and then been infected at that stage if that makes sense). she swabbed me gave me some antibiotics but then when i got the swab results back it showed there was no infection.
there is a possibility there is no infection (unless you have been tested of course) and that any pain you are experiencing is from teh wound healing- as that causes enough pain as it is!
however if you are sure there is an infection then alongside the antibiotics make sure you drink lots of water and also take a yakult type drink every day, this will help stop you getting dehydrated and help stop your tummy getting upset (the antibiotics can upset the bacterial balance in your stomach).
you should definitely be on painkillers- co codamol and diclofenac are safe if you're bfing (with a wider range of options if youre not).
in terms of restitching, don't be fearful of it, as first1 says it can be life changing. i didn't have to have one as like cardamomginger my 3 inch gaping wound healed without that, though i had to have several cauterisations. but many women undergo this procedure and it really helps them. you may want to discuss your options with your gynaecologist, but every wound is different.
in the meantime the advice above about saltwater baths, airing, checking the wound and not getting constipated (don't underestimate this one! something so simple will really affect your pain levels) is great. and also get lots of rest.
fwiw, ds is 6.5 mo now, and as long as i don't push myself and do too much (exercise is a no no right now sadly) then i can now live a pretty much normal life, going out every day, taking ds to playgroups, visiting friends and family. all these things seemed completely impossible to ever happen again when i first had ds and could hardly stand for the pain.
hang in there x