I have found my people! I don't think anyone believed me when I said that my DS cried all day (silent reflux, colic and a baby that hated being a baby).
My mum spent a day and night with us when he was a couple of weeks old and promptly marched us off to the dr as "there has to be something wrong with that child". We got given gaviscon and a leaflet on colic 
I also got sick of the sling advice - great, so I get to have a screaming baby strapped to me all day? I also couldn't sit down or he would scream and I found it difficult getting my jeans done up after a loo visit with him in the sling so I spent the next hour waddling round the house with them round my knees (as an aside a birthing ball is good for motion whilst giving you a "break").
DS would only nap in the pram/ sling so I spent days marching around the local park (I knew wver blade of grass and made friends with some dog walkers) I too would try to have a sneaky nap on a bench but he would wake up the moment I stopped. Great for the baby weightloss though....
I would leave nct meet ups in tears as mine would be the red faced angry screaming Damian and my new found friends would offer me advice such as "have you tried a sling....?" whilst their babies napped soundly wherever they lay (one kid even napped in the middle of the mat at baby sensory - wtf).
You have my complete sympathy - it is the shittiest of shit times. I hated the baby stage. My son improved at 6 months with the introduction of food and the start of rolling.
I now have a 4 week old (somehow the first 6 months of DS did not scar me/ DH for life) who seems to like life so far and, whispers, naps in her cot
It has genuinely come as a surprise that not all babies cry for 14 hours a day (the other 10 being when a boob is in their face).
Those who have not had the pleasure of a screaming nightmare just do not get it.
Oh and dry shampoo. And noise cancelling headphones.