Tigger ...welcome and hugs......
congratulations on the birth of your little one.....
I have a similar story to yours... and it has a positive ending!
My DS was born by emergency c.s after a failed induction....my feelings of guilt, and of being cheated were uppermost in my mind virtually as soon as he was born.. i failed my body had failed him....and i was a crap mum because i couldn't give birth properly.
So i understand where you are coming from.
I think your baby is unlikely to be screaming because he is reliving his birth (!) , more likely a tummy pain, or a bit of wind..DD used to do that!!
If he is a happy smiley baby...i don;t think you need worry about him being traumatised by the birth...and DH needs to keep those sorts of opinions to himself..they do not help anyone!
You could look at it as a bit of a hand with the birth..rather than him being forcefully dragged out...you almost got him there yourself..just needed a bit of a hand....like when you sit in a comfy chair..and can;t quite get up..and someone grabs your hand to help you !!!!! rubbish analogy..but best i can do!
3 hours of pushing is a marvellous effort....and to go through all of that and feel good about being a first time mum is fantastic!
try not to let the last few moments of his delivery upset you......
you dilated and effaced...your uterus contracted efficiently......you did it...just a tiny bit of help right at the end!
Have you had the reasons for the ventouse explained to you..so you are absolutely clear in your mind why it happened? If not, see if you can speak to someone at the hospital about it, maybe the head of midwifery...
if it is really playing on your mind..it might help to talk to a counsellor about it...just to 'put it to bed'...
i had lots of counselling and help after my birth...am glad to see my DD was born 15 months ago.....problem free vaginal delivery with no intervention!
enjoy your baby...focus on how well you did and what a happy boy he is.....and get some help if you need it!
take care!