Had breast lift 14 days ago and am increasingly oozing fluid from the crease beneath right breast. Is this an infection? (photo)

It's difficult to say without examining you in person. I would contact your physician's office for an in person examination. It is not uncommon to have small open areas after a breast lift procedure, but it is important to make sure that there is no sign of infection and that you are instructed how to properly care for these draining areas.

If the drainage is clear yellow, that is consistent with serous fluid. If the drainage is cloudy greenish fluid, then it is more consistent with an infection, especially if it has an odor. Either way, you should see your surgeon right away for diagnosis and possible treatment. The amount of drainage should not be increasing, so your surgeon should evaluate and see if there is  need to drain a seroma or drain an infection.