No, you should not feel suffocated. This stuff he's doing is way over-the-top. It reeks of insincerity and manipulation.
Please don't fall for it. He will try, at some later point, to use this against you. "I did x, y, and z, and it wasn't enough for the ungrateful b*tch--she is impossible to please."
I think your instincts that you are being played are right on the money. I'd be inclined to send the flowers to the hospital for someone who would appreciate them. I used to do that when a victim or victim's family sent me gifts at the office. Much as I appreciated the gesture (which, in that circumstance, at least was sincere), it wouldn't have been appropriate for me to accept it.