Depressing/sick highs

[forty1]

Ok, I've been smoking for about a year now,so im still kind of new at all of this..but i've noticed the past few months a lot of strange things have been happening to me when i get high. Sometimes i'll get sick and feel like im going to throw up, and other times ill just be really depressed. I havent had an enjoyable high for quite some time now. Actually, I wouldnt even say i've been getting "high".I was wondering if anyone has any idea whats wrong with me or if anyone had any suggestions. Is it all in my head? I usually smoke joints, in case that may have anything to do with it. Any help is appreciated.