I have a joint condition (Ehlers Danlos Syndrome) that affects all my joints. My DS is now 19 weeks, and my hands and wrists have been just horrid. It's not just breast feeding that causes it, it's all the picking up and carrying the baby, doing up the fasteners on clothing, lifting car seats and buggies... everything to do with looking after babies seems to be hard on the joints. I have been known to just sit there at the end of the day staring at my hands and weeping in pain . And when I get up in the night, or first thing in the morning and everything has stiffened up, I have to stand there psyching myself up to pick up the baby for the first time.
A couple of things I have found helpful:
-A sling for carrying the baby to give my hands a rest
-A wrist splint as described by others by night, simple tubigrip by day (because trying to look after a baby with wrist splints on is just ridiculous, and the strain just transfers itself to your fingers and elbows IME)
-decent anti-inflammatories from the doc
-A breast feeding cushion to take the weight of the baby
-switching to elasticated baby clothes instead of ones with poppers
-leave the car seat in the car (it's easier if yours has a base that it can click into instead of having to strap it in with the seatbelt) and just carry the baby
-Look at other things in your life that may be aggravating things. You can ask your doctor for a referral to an occupational therapist, they are complete life savers and can really help you to minimise the pain. In some places you can also self-refer to OT, that's what I did, there's one at our hospital who actually specialises in helping parents with disabilities, she was superb.
I have to say, while your GP may be right about water retention, the actual cause of the problem is the repetitive strain the wrists are under. I don't think that stopping bf will actually get rid of the problem (although the swelling may reduce) because of all the other repetitive strains involved in baby care. I'd try eliminating as many other aggravating factors as you can before you drop breastfeeding.
You have my complete sympathy, it's really horrid, and so frustrating (((pamelat))). but it really does get better. For me, the turning point has been now that my DS can sit happily on my knee with minimal support, instead of me having to support his weight with my hands all the time.
Let us know how you get on hun x