Another one here who had missed your initial post.
I'm another who came off on an MTB course (actually a skills weekend for women only in mid Wales) and got up and carried on at couple of years ago... I then drove home and waited several days before a chest infection got the better of me along with a really sore thumb. My helmet was in 5 pieces and I was more interested in getting it replaced to go on holiday than actually being able to wear it (which I wasn't) due to brushing all down the left side of my face. I walked into my GP's surgery, got sent to the local A&E for x-rays who promptly separated my husband and I for a chat with me about domestic violence! My husband hadn't even been with me at the time!
1 cracked rib, several bruised. Head and thumb in tact... Forehead badly bruised, black eye but no eye issues... Oh and a chest infection...
Best wishes and get well soon. Take it easy for a while, says the one who has really had to learn the hard way that I don't heal as well anymore!