Acid Reflux Suggestions?

Hey, ladies. I've had acid reflux for several years and was on meds (Nexium) for a while but tapered off and adjusted my diet. I've been med free for a few years. This pregnancy has made my reflux come back with a vengeance, especially in the evenings. I've tried eating dinner earlier, sitting straight up for several hours after eating, cutting out acidic foods, sleeping propped up. So far nothing has helped. I've got my first appt tomorrow so I'll discuss it with my OB, but I'm wondering if any of you have suggestions. Thanks!