I have an ache in my calf and pain in my ankle. could this be dvt? there is no swelling or redness.

Possible: You don't have to have swelling or redness to have a dvt. If you are concerned, see your doctor.

Yes: Either Achilles pain (strain, tear) or DVT would be most likely. See a specialist for a simple scan that will determine whether a clot is present. Swelling and redness is present only about 50-75% of the time.

Maybe: Calf pain that radiates down into the ankle could be a DVT but there are certainly muscular, ligamentous, and tendinous problems that can give you the same symptoms. Although swelling and redness certainly don't happen all the time with a dvt, there is probably a reasonable chance this is not a dvt. As dr. Ryan said, though, the only real way to know is to get a scan.