yeah man, i was recently on prescription anti depressants, 100mg for a month, not good, was difficult to get off em, id recommend you stay with a good friend for a while, away from your place and your stepdads pills, just see if u can crash for a few nights, someone who knows you very well and who knows your situation, someone who knows that you dont mean all the hurtfull shit youll no doubt be saying soon, depending on what type of pill it is (write down the medical name for it, it should be on the box, and ill tell you more info), depending on what it is it might take a couple of days..... i also recommend you try and stay with someone you dont know harmfull secrets about, say u slept with a mates girlfriend or sister and he dont know, if u hangout with him in this state you may let it slip..... so be carefull bout shit like that

good luck man