How can I get over my fear of driving a car after a car crash I had today?

I know this sounds silly but it started after I was involved with a car crash today. The car crash was both my and the other parties fault. Nobody was hurt but I couldn't drive afterwards and get goosebumps and feel sick of even driving tomorrow. I have to go to specific places tomorrow so "not going" or "asking for a carpool" is not an option. I am really scared of even getting into a car now..