Hello and congratulations
I also don't care to be the center of attention and can relate to your feelings. What I have tended to do before I learned better was to focus on the whole situation and it was big and overwhelming and I thought I had to live the whole thing at one time. But-- the time will pass in segments, so take the thing in segments. ( I would answer the door and greet each person. Then you start with one and the group grows gradually. Instead of walking into a room full of people, too.) Like, at a shower, you'll probably play silly games, so focus on others playing and the fun they are having. They are all looking at each other or thinking of their grocery shopping to be done or the TV show they want to watch, etc. And then of course there will be eating, so more conversation among others and focus off of you. During the gift opening, make sure to pass the gifts around and then they will oooh and aaah over the cute stuff and secretly you will be opening the next thing without them looking. Mostly the lookers will be the one who gave you the gift. And keep drinking water, so you have something in your hands, and then... you can excuse yourself to pee. Hee Hee.
I think it's a good idea to confide in someone if you trust them. Hormones are a great blame absorber-- I agree.
Remember that the people who gift you, love you, and you are probably not going to have too many baby showers in your life, so enjoy it while it is here. You don't want to live with a big regret and wishes that you could do it over.
It will be what it is and come and go and that will be that.
