As everyone else said, you will be fine! You will be amazed at the things you get at your baby showers will keep you stocked through their 1st and maybe even 2nd birthdays.
But just remember this.
Babies only NEED two things...food and diapers
Hopefully you can provide the food free of charge. And for the diapers...I had a themed baby shower for my second son, where we asked people to bring baby care items, such as diapers/wipes/and other such things. I was stocked for a loooong time.
I hope you're feeling well!