I Have Taken Clyndamycin As Directed. 3 150mg Tablets Every

I have taken clyndamycin as directed. 3 150mg tablets every 8 hours for a week for Periorbital Cellulitus of my left eye. That was on 1/12/2016. On 1/18/2016 I started getting horrible stomach pains. First it was only when I ate or drank anything, it would burn and then lightly go away with time. I only typically drink water and I am a vegetarian so my diet is pretty simple yet healthy. So when this started occurring I did not know what to do and waited a couple days, thinking the antibiotic just really upset my stomach. Still watching my diet even more and everytime I'd go to drink water it still burns. Cant even sip water at this point without it burning my throat and stomach. I went to the ER again on 1/22/2016 for all this stomach and burning pain. They took my blood, gave me an IV for fluids and gave me a GI Cocktail for comfort, but that made things way worse. For about an hour I sat in pain waiting for the results of my blood and the nurses not knowing how to comfort me. Once the results were back the doctor came in and said "Im sorry but everything is normal. Your blood work is excellent and we don't need to do a cat scan or ultra sound from the looks of my blood work. I stated to her, that I think that would be smart just in case but she stated that it could be just from the antibiotic and it being a very rough one to deal with. So the ER doctor did not know what was wrong, yet prescribed me ranitidine and sucraflate for the time being. I have a follow up appt on 1/25/2016 for the follow up of the periorbital cellulitis and I let the ER Doctor know this and she just stated to bring this all up to my Doctor then and she said Im sorry we don't know what is wrong with you. I have my dr appt tomorrow but I was just curious as to what someone on here would think. Im not vomiting. or nauseous but have a fever and feels a constant dull yet sharp and irritating pain and burn in my stomach, esophagus, and parts of my pancreas are on fire. I havent been able to eat anything but yogurt. 1 yogurt cup a day and barely any water, I know this is not normal and Doctors in my area have been losing there jobs left and right due to budget cuts and I feel like I just need someone to really try to explain what could be happening