Hi Anna, go for it as soon as you want! Don't let them take your baby away unless they need to for medical reasons... I think that's very sad your son was taken away from you just to wait in your room
Hopefully this time round they'll be a bit more sensitive at the hospital.
When I had Natty, we tried straight away, even before DH got a cuddle. She wasn't really interested at that stage, so we left it for another half-hour, then tried again. The middies actually suggested it the second time round, so I hope your midwives help you out in this too... All the best for a great birth and for happy breastfeeding times ahead!