Conversation: The conversation between human and AI assistant.
[|Human|] I gave blood in last week . from day before  yesterday,  I started go to gym and lifting weights. but i felt only left hand starts paining through which i gave blood  ... is that common ????   right now not big pain but is any chance of  real pain in future?????
[|AI|]  Hi, I don't want you to worry. Sometimes blood donation causes some pain usually due to irritation of tissues and veins by the needles and cannulas used especially for longer period of time like while donating 500 cm blood for a period of 10 minutes or something. Usually that is thrombophlebitis which happens normally with some persons. Some torn tissue causes muscular inflammation that is sometimes painful. I think the pain will fade away soon with the use of some topical antibiotics or gels and some hot massages. The pain won't take long. Hope the above information helps you. Any further clarifications feel free to ask.