That is how I would expect it to feel, like a sore muscle.
What could have caused this? .......I suspect that after the blood was drawn, since pressure was not placed on the area, the blood seeped out of the hole in your vein and under your skin to form the bruise. Blood does not belong under your skin and causes the bruising and tenderess that you are describing.
Please let me know if you have any other questions!!
Take Good Care! Nancy
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