I am sorry to hear about your symptoms. It sounds like they are severely affecting your life. I strongly encourage you to discuss your symptoms with a primary care doctor
, as it is not possible to provide an accurate diagnosis without reviewing your full medical record and performing a thorough history and physical exam.
A blot clot occurs when blood pulls in the veins, often due to immobility, surgery, or trauma. Your risk of developing a blood clot increases with obesity, oral contraceptive use, and disease such as autoimmune disorders or cancer. The concern with respect to a blood clot in the leg is that it can migrate to the lung, thereby causing severe strain for the heart. Blood clots in the leg often cause swelling and pain.
After an ankle sprain, it is typical to develop bruising in the foot because the trauma leads to damage to many small blood vessels. However, you are certainly at increased risk for a blood clot to your immobility after the accident and your use of birth control
pills. It is unclear how your sensation of feeling hot and dehydrated along with a migraine
could be related. I strongly encourage you to raise these concerns with a primary care doctor.