Could be serious: This could be a sign of some serious intestinal bleeding especially if you are feeling lightheaded. Given the long flight, i would not risk it ; see a doctor to have your stool examined, vitals checked and blood count ordered. Good luck.
Answered 10/15/2015
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A doctor has provided 1 answer
3 doctors weighed in across 2 answers
A doctor has provided 1 answer
3 doctors weighed in across 2 answers
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