Finding it difficult...

I am finding myself getting worked up over my Husband going out. We always used to go out together, every weekend. But now I'm pregnant I don't have the energy to go and if I do go out to a bar or something to meet friends I quickly tire of watching everyone get drunk and want to go home. It's not that I don't want him going out and enjoying himself it's just he goes out, gets drunk and rolls in at 4 or 5am every weekend. Should I be making a bigger deal out of this or is this just a cross I have to bare because I'm pregnant? Is it much to ask that he reel it in a little?