I am pretty new to diving, and have been getting sick stomachs after I go past ~80ft. Am I safe in assuming this is from Narcosis, I am really not sure. My divemaster gave us plunty of time for decompression, but I have gotton a sick stomach three times after a dive. The first was a Manta dive around 75ft. We were down there for around 15 min and went to 15 ft. for around 10-15. On my deep dive, for AOW, we went around 100 for ~10 and stopped off at 20-15ft for around 15-20 min. On both these dives, I felt a little wierd at about 70 ft. It was barely anything. When I got to the surface and felt like I was sea sick, but I don't get sea sick. My stomach was sick for around 2 days. This last dive was our AOW naturalist, and I went down to 80ft and got some good Shark pics, didn't feel sick at all. That was yesterday. Today, about 22 hr later my stomach is sick again. What do I need to do.