I've been taking Percocet for about 3 days now, about 10-12 pills a day of 15 mg each, and most of the time I get a stomach ache even after eating properly afterwards I just end up reeling it later or throwing it up which makes me feel better but pathetic- also having trouble urinating after I've taken about 4 or 6... I remember in the past after like say WD of an opiate I may get better but once I started on it again I may have felt relief yet I begun getting queasy... anyone else ever get any of this, even with Vicodin? Appreciate the positive comments.