<human>: Give me the gist of the text in a nutshell

I was stupidly riding a bike with my friend on the street to a party, he was peddling and I was sitting on the seat. We were almost there but I had a bad feeling and I said "We're going to get hit by a car" my next line was going to be that I wanted to stop and get off but it was too late because before I knew it I felt impact and we went flying and then we were in the middle of the road. We quickly pulled ourselves off the road and were just laying in the grass in pain. My back was really sore from the impact and my left foot/ankle area didn't feel right. He got up pretty quickly, I guess since he was in front he didn't have injuries. I assume the car was going 30-40 mph and they were probably texting and didn't see us, because other cars had been going around us and slowing down. 

I got picked up and went home, I was able to walk somewhat and clean up myself once home. Now that I've been lying down for an hour my back is starting to get very stiff and my ankle is starting to swell to the point where it's very difficult to walk...like a sprain. I have some cuts and scrapes but I took care of that. I have insurance, should I see a doctor tomorrow? Is it necessary? Just need some reddit input here.
<bot>: Got hit by a car while biking with my friend, ankle might be sprained, back is stiff (injuries worsening), what should I do?