Oh My Goodness! Jenn, I am so glad you are home and safe. How scary for you and your family. I am sorry that you are in such pain.
I don't think I would worry about getting back on your bike right now. Just concentrate on healing and feeling better right now. Heal your wounds and your bruised head; take a couple of weeks off and then see how you feel.
Sending lots of healing hugs your way. Rest and take it easy.