I noticed when I feeding ds (bf) hes lying tummy to mummy his nappies are cutting into his leg making it go blue.
The nappy is not too tight if anything its too loose and this has happened in an itti and a bambooty. That I know off it could of happened other times when hes had his legs covered and I havent noticed.
Hes a newborn that gets fed every few hours so this is a major problem. I paronoid now with him in cloth.
Hes fine with no nappy on and he seems fine when he had is minki wonderoo on as it was alot looser and soft around his legs, hes in sposies at night (using up the supply) and no problems . Im pretty certain its a combination of him laying on his side so all his weight is resting on his hip and the more solid nappies digging into him.
poor LO! haven't really got any helpful suggestions, the only thing I can think of is maybe the nappy is getting pulled sideways if it is becoming trapped between the two of you (IYKWIM) and that it causing it to dig in? Hope you figure it out soon