Just got home after four days there. Had a can of canola oil spray explode in my hand - apart from the severe burns and bruising, I also suffered a compound fracture of the right thumb which required plastic surgery.
I haven't stayed at a hospital since I was around 12, and then it was only for tests. I am,. however, a "frequent flyer" at the local emergency room. A few months ago I stuck a steak knife through the back of my hand (the knife was in my back pocket at the time). I still have nerve problems in that hand.
Oh my goodness! I'm glad you are not hurt even worse. It sounds plenty bad. Sounds like you had some good care though. Put your oil in a refillable oil spritzer/sprayer. Very safe and cheap. I don't do it but I rarely use oil. I buy the smallest bottle and throw about 95% of it away when it expires.