i think its just a phase.
i used to have some odd problem that was triggered by my own thoughts also. i used to think about having like a panic attack and i would, i remember posting about it on here ill try and find it.
http://www.yahooka.com/forum/showpos...5&postcount=18
edit: found it. well i had some like phobia of not being able to drink or have water. even though i would tell myself "ok im fine, you can go like 4 whole days without water, don't even think about it fuck it". but i would get cottonmouth like no other and would kinda have a panic attack. not to the point where i didn't keep it to myself because i knew how retarded it looks but it was definiately some sort temporary insanity. i fuckin hated it. but now i havent even thought about it in at least 3 years. it hasnt affected me or even crossed my mind. if this shit can just happen to anyone.... fucking crazy.
ps: and this all started/ended before i tried weed FYI