Where are you bleeding from? Is the blood in your stools, or vomit? Is it massive amounts? that can be lifethreatening.Have you been bleeding since the incident or has that started recently? Are you on any painkillers - things like Ibuprofen can sometimes cause bleeds from the stomach/ gut lining.The implant in your arm is unlikely to be related, unless you are on blood-thinners (like warfarin, aspirin or clopidogrel).Do not take this lightly, have yourself seen by your doctor. Rushing to the hospital may not be needed, but you do need medical attention.

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