I do worry alot because I spent alot of money, The weed I got wasnt good grade, and I just want to get better. My ear is in constant pain and these doctors don't know how to fix it. people have done operations and destroyed their easr. No one knows anything about the ear. Doctor know nothing

I don't have another chance to make it again.
Can someone answer if they ever had a bad batch of RSO and if they had the same result I did?

I worried that I didn't evaporate all the alcohol. (what if I didn't?)
I'm worried that I used 91% vs 99%
I worried that I got a headache from a 1/2 size of rice dose.
I'm worried that the weed I had to make this was laced. (wouldn't the evaporation get ride of any spayed toxins?)
I worried I'm poisoning myself. I want to get better not die. Is there a way to test the oil?
Any place that just sells it? in the US/ Eastcost? I do anything to get this right and my ear better. I'm losing hope.