If you had internal bleeding how would you know? would heart rate speed up? blood pressure drop?

It depends: BP drops and hr speed up if bleeding is sudden, as in minutes to hours. You will also have other signs symptoms like clammy , dizziness or passing out. If you bleed over time, these parameters will not dramatically change. You bodily system will compensate.

Dr Cullington agreed

Emergency: Internal bleeding would not allow one to be ambulating or living any kind of a normal life. Pain, fever, diaphoresis, and low blood pressure would most likely be present. Now, please re-ask this question and tell us what you are experiencing so we can give you a more valid answer to your situation.

Bleeding: Yes to both of those. The first sign would be an elevated heart rate (over 100). Next would be a drop in your blood pressure. You may also start to get lightheaded, especially when you stand up. If you have concerns, please see your doctor.

Dr Fowler and another doctor agreed