1 pair of WB Socks Cotton Rich Unisex Anti-Dvt Flight Socks

I'm a normal size 6 shoe, should I go for the smaller or the larger size? Both say the end and start on a 6, so I'm not sure

I have chunky calf as I am somewhat overweight so wonder how these will fair? I am a shoe size 5, any recommends, advice would be most welcome.

Are these socks good for swelling in pregnancy?

i wear ladies size 6 shoes should i get the small or medium size please?