I've been on Sucralfate for about a month and just finished my last pill yesterday. I had went and got a new prescription last night for it. I thought all along it was helping with my gastritis. I just took one this morning on an empty stomach and now I'm feeling weird. I'm feeling shaky and jittery and my heart is beating a little faster. I also have a flutter and yucky feeling in my stomach. What should I do?