I Take Prevacid Every Day, Okayed By The Gastro Doctor

I take Prevacid every day, okayed by the gastro doctor who has released me. I had an endoscopy done a few months ago, unremarkable. Recently I decided to try to get off the Prevacid and stopped taking it. Ok for a few days, it came back so I started back on it within 4-5 days. Have sensation of pressure on front of neck where collarbones come together. Not painful, just uncomfortable, like someone's lightly choking me (weird thing to say). Took steroid shot, Zpack and Prednisone last week for sinus infection and had Pink Eye during that time also. I take Xarelto after having 2 blood clots several years apart. I'm 57, female. Have also had sharp pain in center of chest, goes thru to back lasts up to 20 mins, seems to end up at back, by lower edge of left shoulder blade. My MD said perhaps gall stone passing, suggested sonargram to see gall bladder, haven't done yet.