ah bless you.. it's such a shock at first. I remember those days well.
First, the feeding is completely normal and it doesn't sound as if it's tounge tie.. i'm getting a bit fed up of seeing that on these threads.. plenty of wet/dirty nappys, weight gain and feeding well is what you want.
He's 3 weeks.. for 9 months he was carried around constantly, his temp was constant.. he didn't feel hunger or thirst and he had soothing sounds of your body none stop.
Then he goes through this violent experience and shoved out into the light and the cold. For the first time he makes a noise, he feels hunger and thirst and that uncomfortable feeling in the shorts area. You are the only familiar thing he has and of course he's going to want to cling to that. Would you want to be put down 
also we are not cows.. we don't all of a sudden start producing gallons of milk. It takes weeks for feeding to be established and as it's your bodys first time in making milk.. it's still learning as well. It remembers somewhat better the next time.
Also human babies are born too early.. we only have them because of the head.. they really should cook for another 3 months, So the 3 months after birth are the 4th trimester and baby is still attached to you.
Take your baby to bed and have a babymoon.. really all you should be doing is feeding and have somebody on hand to feed and water you and give you the remote. not practical I know. A box set on netflix.. or an xbox [breastfeeding is how I got into gaming]
I promise from the bottom of my soul that it gets easier.
If you have a particularly sucky baby like i did.. a clean little finger nail to tongue can be a godsend if they just want to suck.
keep talking and take it day by day.. I swear it gets better but keep telling people how you are feeling.
and fuck the housework.. your bloke etc can pick up the slack in that area for a bit.