Theres a difference between physical affection and love. I think a lot of mums struggle with the constant touching and that is fair enough, especially when you are pregnant and your body doesnt feel like your own.
I tell my DC I love them all the time and most of the time am totally up for cuddles but there does come a point in the day where I struggle in the evening when I am tired I get " touched out" and I know a lot of other mums feel the same.
I make sure I hug and kiss them before bed but there is almost always an hour where I need to go and do something else, clean the kitchen tidy a bedroom whatever because I simply need a break.
I've always wondered if my ds1 whi has sensory issues gets it from me, because in this same period I cant bear loud sharp noises (I'm onto a loser there with two boys 7 and 4 !!!).
You aren't wierd , alot of parents I know struggle with the constant touching. I dont love my DC any less but now after 7 years I have learnt to just take time away. And be ok with that. I teach my DC about bodily autonomy and it's ok to have some for myself.
It's wrong if your dh to encourage your DC to override that. Exdh understood It a bit more because he saw it first hand when DC were babies but I've explained it to DP and he gets it now and will step in and distract DC if it's been a constant touching.
Really not ok for dh not to listen to you if you are explaining it (and if you haven't you need to explain to him)
You really are not wierd , maybe counselling will help if you can trace the route of your frustration. It's a wide statement you have made though , just because I need some time where im not being touched I dont describe myself as not affectionate, quite the opposite im very affectionate the rest if the time and I dont consider it a major flaw that I need my own body back, surely that a basic rule of being human? Why is it different being a mum?