I experience dry mouth and excess thirst after consuming marijuana for the first time. Kindly help.

Hi doctor,

Five nights ago, I was out with my friend, and he convinced me to try a marijuana tincture that he said was about 65-75% ethanol. First, I tried 0.1 ml under the right side of my tongue. I held my head back and essentially let it sit there for 20-30 seconds. I felt a burn from the ethanol, but my friend said to expect that, and it was nothing unbearable. Later that night, I tried 0.15 ml more under the left side of my tongue. Again, I held my head back and let it sit for 20-30 seconds, and again I felt a burn from the ethanol. Please note that these doses are each equivalent to about two drops. Over the next three to four days, I had a canker sore under my tongue, but it went away within three to four days. However, I have had a dry mouth since that night of trying the tincture, to the extent that I have been unable to sleep for more than four to five hours at a time because I wake up with a very dry mouth. It seems to have gotten a bit better over the last five days, but not much. I have just been drinking a lot of water (10-12 bottles per day), and I am worried. Please note that I have not taken any marijuana nor any other kind of drug nor medication since that night. I have been completely sober over the last five days while experiencing the dry mouth (and also before the tincture). Since I am not a doctor, I do not know what to look for when I lift my tongue, and I figured that since the residual canker sore pain went away within a few days, it was not a big deal. My question is, why am I experiencing dry mouth, and is it something that I can expect to go away or resolve on its own soon?