Conversation: The conversation between human and AI assistant.
[|Human|] I had upper thigh pain at least a few weeks ago, but I thought it was just a charlie horse. Now I think it might have been a blood clot, especially since Im on birth control. This has happened to me twice, but they were a month, and a few weeks ago. Am I at risk for a clot moving to my lungs?
[|AI|]  Hi, Thanks for asking. Based on your query, my opinion is as follows.1. Yes, blood clot in thigh or even legs can move to lungs. This is called as deep vein thrombosis embolism to lungs.2. Oral contraceptive is a known risk factor. However, without previous history or excessive bed rest or immobility, deep vein thrombosis cannot be thought of.3. If you have any breathing difficulty, then it needs to be viewed seriously. If you are still doubtful, get a Doppler of the lower limb done. Meet your doctor for evaluation. If clot is present, you need to stop further OCP use and use alternate methods of contraception. Also, anticoagulation therapy will be needed for life. Hope it helps. Any further queries, happy to help again.