Hello and Welcome to ‘Ask A Doctor’ service.
I have reviewed your query and here is my advice.
Yawning is a withdrawal symptom of Methamphetamine
. It means gradually you are getting dependent on Methamphetamine.
I suggest you to motivate your mind to quit alcohol and methamphetamine use and visit nearest De addiction clinic for healthier life.
Hope I have answered your query. Let me know if I can assist you further.