Husband doesn't get me

Amy • Mom to 4 beautiful girls. 3/3/10, 4/27/14, 4/8/17, 3/7/19.
I love my husband immensely and I know he loves me, but ever since we had our daughter, 4/8, he just doesn't seem to get where I'm coming from when it comes to staying away from people. Little backage I'm a giant introvert to begin with so I'm not a huge fan of people to begin with, she's also so new that I'm nervous about the germs right now. It stresses me out to go be with people whom aren't family right now. He just gets super frustrated with me and doesn't get it. I've also been dealing with depression for over a year now and so I'm trying to be very aware that some PPD could be going on making my introvertedness, and everything being overwhelming amplified. But I'm left here trying to isolate myself away from others so I can cry because I feel like I'm being pushed out into an ocean of people just to keep my husband happy or risk him being frustrated/angry because he doesn't understand where I'm coming from. I don't know what to do. I feel super alone right now.