Hardworking, amazing dad, kind and supportive
v
this is whst I'm like, I tease. If you don't like how I am you are free to not be with me
These things are at odds, OP. Kind and supportive people don't say 'If you don't like what I do, go elsewhere'.
I don't know what to think and whether my past relationships is having am effect on how I'm seeing things
Of course they are, and so they should. If you've been abused in the past, you'll be sensitive to abuse. That's not something to try to 'stamp out' in yourself, it's something that any worthy partner will respect. They'll treat you gently, they'll be careful around your triggers. They won't say 'Oh, take your stupid triggers elsewhere if you don't like me poking fun at you'.
Having your feelings is never ridiculous. Expecting them to be respected, however unusual they might be, is a given for a healthy relationship. For example, if you can't bear watching your partner eat raspberry jam, that's really unusual. But your partner, if they respect you and care how you feel, will try to find a compromise, or just stop doing it, if it bothers you. They won't say 'Oh, don't look, then!' and carry on regardless.
We don't know what causes our triggers sometimes (perhaps our childhood abuser used to give us raspberry jam before abusing us?) so nothing can be ruled out as 'ridiculous'. We all have our sensitivities for a reason. Nobody would expect someone who'd been mauled by a dog to be ok with dogs. Nobody should expect you not to have your sensitivities, given your history.
The most important person who needs to realise that your feelings are valid and need to be respected, is you.
If he doesn't like your sensitivities, he is free to leave you, too. How rude of him to make this statement. As if you didn't realise already..?