Do you feel slightly dizzy too, that can be a co2 buildup in the blood stream. Try lenthening your recovery times.
It could also be a sinus problem, that would hurt if you increase pressure on it, and dicipatate after a while as you come back up and the pressure goes down. Have your sinuses checked, its worth a shot, it could be just a small problem by the looks of it easily corrected with some meds
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Dive safe and shoot straight
- Hénré -
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"Thinking is the hardest work there is, which is probably why so few engage in it"
- Henry Ford -
