nausea, vommiting when taken on empty stomach, headache & weird d...

nausea, vommiting when taken on empty stomach, headache & weird dizziness feeling. Also, very irritable, but thought it was due to PMS - however, I've read that others had irritability too, so I think it's from this EVIL medication, since it seemed worse than my normal monthly crabbiness. Also, I'm taking it to treat acne - & how ironic, it seems to be making my skin worse - breaking out in tiny whiteheads all over my chest, neck & shoulders - ugh! Don't know what I'm going to do now! Should I stop taking it, or will these little pimples subside?