I went to urgent care two weeks ago for sinus

Patient: I went to urgent care two weeks ago for sinus infection and mentioned I had abdominal pain undet rib cage and near belly button and lower back pain,bloating, and nausea. I followed up with my primary Dr. And he told me to take a heart burn med. For two weeks to see if it was acid built up. Yesterday, I felt light headed, lethargic, nauseous, had a severe headache, and stomach pain. Along with weakness and sore legs. Still have tight stomach pain feeling today and weakness in legs. Any inkling on what it may be? My doctor is out until after Easter.

Doctor: