My DH is sweet.
If he sees me carrying shopping bags he comes and grabs them off me. I told him the other day I could manage. I'm pregnant not cripple. LOL the bag was filled with two loaves of bread

But he still worried.
He doesn't like seeing me do things that are strenuous. He's often told me to go sit while he does the work (not house work... I'm not that lucky.. talking about painting the nursery etc)
He doesn't overdo it though. He seems to be in tune to what I want and need. It's just the mood swings that can leave him looking a bit desperate at times.
I suppose the protection from his side comes from the fact that we've already suffered a miscarriage and an ex of his (many many many years back) had an abortion without telling him.