Hello, i would want to let you know that
smoking marijuana frequently is known to affect the brain in the form of sleepiness,
dizziness, having short term
memory loss and a prolonged sense of euphoria (feeling good).
A heavy intake exposes your body to a prolonged effect that causes disturbances in thinking process and perceiving objects, making them appear brighter, sound louder and feel stronger than they are. Also, it affects your mood and behavior, making you feel relaxed and dis-inhibited.
In your case, it seems like the
headaches are a part of the effect of marijuana on your brain, whether due to intoxication after heavy intake or a withdrawal after stopping intake.
If you are feeling stressed for any other reason or having symptoms of breathlessness, racing heartbeat, sweating, tremors or fidgety-ness or constant worrying, then we may think of
anxiety as a factor.
I hope this answers your question. In case you have any more doubts, feel free to share here.