I've had 3 c sections over the course of 5 year and things have been different each time as I had my babies at 3 different hospitals. I has no injections for my 1st, 1 injection for my 2nd and a weeks course of Fragmin for my last baby. Hate the Fragmin, it's awful, sting like a bitch and bruised me so much! I always had the socks though. I only kept them on until our of hosp with the 1st, same with my 2nd but with my 3rd I was told to wear them for 6 weeks!!! I did end up wearing them for a much longer period with my last as it too me much longer to get fully mobile and was have lots of leg pain and I found they helped esp at night. They also all told me to remove my dressing the next day and have a shower to keep the area clean.
I still have a big belly but I expect it's fat and because I've had 3! I did notice though that my stomach was less flabby as such after about 4 weeks xx