Linkus420

Ive been smoking roughly a quarter every two days for about 7 months now, and lately it seems like bud just doesn't work anymore! Now when I smoke, instead of getting high like I used too, nothing happens except for a light head rush. I've tried smoking out of everything lately too; joints, blunts, bongs, pipes, vaporizers, and anything else I try leads to the same results...nothing! I've heard that if I stop smoking for like two weeks or so, that I'll be able to get blazed again, is this true? And has anyone else had this type of thing happen before?