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Thanks for the question.
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You have following possible causes for black stools:
1. you are on heparin which is a blood thinner or prevents blood from clotting and can cause bleeding in stomach or gut especially if one already have ulcer disease
2. charcoal can cause black or dark coloration of stool upto two days after intake
if #1 is true, will the bleeding stop if I stop taking the heparin?
I was not having any bleeding before
Yes but you should not do this at home, because clexane is being given to you to prevent clotting in your leg and if you stop it without consulting your physician you may increase your risk of developing clot in leg
Okay. I have an appointment with a private doctor on Monday for an MRI, so I would like to stop until then
but how long will it take after the last clexane shot, for the bleeding to clot?
and is there danger that I could bleed too much now?
I do not have a physician here, it was only the emergency room
Okay it takes 4-6 hours for clexane to take its effect off
Ah. Okay. But I am only taking 1 shot per day, of 40 mg
Best would be to consult emergency services for assessment of whether it is bleeding or not. keep an eye on your pulse and blood pressure. if the pulse increases and blood pressure goes down or if you feel dizziness on standing from sitting position, visit emergency
keep yourself hydrated
do not take more charcoal
Okay. Thank you.
I have to go back to the bathroom, thank you for this
You are welcome!