This must feel really disappointing. Your friends may genuinely NOT get what you’re going through, through no fault of yours or theirs. This is especially true If they’ve not gone through the postpartum period themselves and/or you’re not all at the life stage where lots of people around you are have babies. I’ve been surprised by how many very intelligent, learned friends of mine are utterly clueless about the reality of baby life! They may have no idea the weight of what you’re dealing with.
I think it’s also worth remembering that when PND hits hard, it can by the very nature of the issue be all too easy to read things with a negative and sad mindset and take, for example, a simple reply as a cold reply when that isn’t necessarily the intention. You need more back, so it feels hurtful and lacking. Perhaps not at all relevant to your situation here, but just in case…❤
If things don’t clear up with your friends, maybe take a small step of going once a week to a mum and baby group — a low-key, low-sensory (for the babies but we benefit too!), controlled environment where you’ll meet others who understand what you’re dealing with better and with whom you can bond.
But first things first, as others have said, speak to your GP, health visitor or midwife.
Sending good wishes to you