
So I’ve Had A Cold The Last Few Days And

Most likely dehydration
Detailed Answer:
Hello, I'm Dr. Branch,
Thanks for using 'Ask A Doctor' service.
Given your history of cold and especially diarrhea, I would suspect that you are likely dehydrated to a certain degree, and increased heart rate is usually one of the first signs of dehydration. This can especially happen when you stand up, since this causes your blood pressure to drop, and since there is not enough blood volume for your heart to adjust to the increased need to pump blood to your brain, the heart beats faster to try to compensate. The fall in blood pressure can also make you feel lightheaded and dizzy whenever you stand up.
This is a sign that you need to take in more fluids. If you are unable to make up for your fluid losses from your diarrhea, you may need to go to the hospital to get IV fluids, which often helps patients who are dehydrated feel much better.
I hope that helps...
Please let me know if you have any questions, I would be glad to discuss it with you further.


See below.
Detailed Answer:
I don't know how old you are or what other past medical history you have, or where you are located, but it sounds like you will need stool studies and possibly a colonoscopy done to figure out the cause of this chronic diarrhea and abdominal pain.
I'm afraid I cannot help you much more than that, but if you have any other questions please let me know and I would be glad to help any way I can. If you can tell me your age, past medical history, what country you are in, and what treatments you have already tried, that might help me to give further advice for your situation; but either way you will probably need testing to figure out what the cause of this is.

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