Post Appendecectomy - Nausea

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I recently had appendicitus, it had not yet ruptured and the operation was done successfully 1 day later via Laparoscopic method. (Keyhole surgery, 3 incision holes). I felt OKAY after returning from hospital 2 days later and for the following week I was OK. The next 2 weeks however, were followed with a feeling in my sinus/throat area that made me feel like gagging, and it was accompanied by nauseated, ticklish feeling in the stomach that almost makes me feel like punching my stomach. I had diarrhea after the operation but since then my bowels have been fairly normal, with some episodes of minor constipation. I have also had regular bloating. After those 2 weeks, I felt OK with the feelings of nausea only coming now and then. I usually have no appetite since the operation (it's been 5 weeks now), but once I start eating I am OK. The doctor prescribed me some amoxxil to take for a sinus infection, which he believed was the cause of the sensation in my throat,nose area, and I have just finished them today. Today I have also had extreme bloating and a nauseated feeling in my stomach again.

This is starting to stress me so much, and I just want to feel "normal" again. I have no notable pain anymore, my wounds are not infected and are healing well. Its just this recurring feeling of nausea that I have, bloating, and a gagging feeling in my throat/nasal area. Thanks for any help.