Well done you for getting back on and going (also well done for deciding on the helmet after the first fall!!)
I've had so many falls I can't remember most of them, but I have broken ribs on my old mare... That was something as simple as the way my body is built(I tend to injure my left ribs easily), I got left behind at a small jump and lost my stirrups, ended up underneath the mare and rolled over backwards as she jumped over me, I'm soo **** lucky she didn't step on me that would have been so much worse..
There were silly falls where I vaulted on bareback from the ground one day (I was 5' and my mare was 15.2hh), Bubbles didn't like that and I promptly ate dirt with no helmet on (oops)
I'm probably about due for another one on my big boy Mitch, I've had him 2 years and fallen off him twice, the first time I tapped him on the shoulder with a crop and he went from lazy twit to rodeo bronc, I had no chance, I never knew he would buck like that!!
(Have since learnt to stay on bucking maniac)
Second time was jumping a pile of branches in the paddock, the first time was alright after we both supermanned it, second time we jumped it he bucked afterwards and I lost my stirrups and promptly slid off the side and ate dirt again.
This year I got thrown severely off a friends mare, the mare has a bit of a story behind her but I went out to give the owner a hand, vaulted up into the saddle and didn't even get my other stirrup before she was going bronc on me, I held on and was hanging off her side with her saddle slipping and then realised I wasn't getting back on anytime soon, so I let go and pushed off with my feet and promptly got thrown into the ground, luckily I wasn't underneath her though, very close however.
-Note to self, what do all my falls seem to have in common minus the bareback one? Answer: Loss of stirrups... Solution: practice stirrupless work muuuuuuch more!!
(I never actually put two and two together till literally right now!)