I burned my finger by lighting a can of deodrant please help

I was being stupid bored as you do and I sprayed some deodrant into a bottle and lit it and it back fired onto my thumb and burned it please help
It is not blisterd it happend around an hour ago and the pain is still immense. Ive had it in water the whole time and its not helping

I would get some burn ointment if possible to at least relieve the pain, then, if any signs of swelling or blistering appear, and don't go away, get a doctor. My mom burnt her finger bad, but she just used ointment and waited things out. Also, you probably just saved me a very bad experience ;P