Massive bleeding after breast lift. It's still leaking. Is this normal?

It is impossible to give you advice without a photo and being able to compare sides. You need to be assessed by your PS asap and make sure there is no haematoma. It is usual to have some oozing but a massive bleed usually means a return to theatre.

Call your surgeon. With concerns like this, you need to be closely followed,  with in-person visits, by your own surgeon.