I think they look great and that lump you feel may be the implant but it could be a loclaized collection of blood or fluid and should go down with time.Be patient.
At this stage of your recovery it appear as though you have achieved a great early results. Your breasts will continue to settle and heal over the coming months. If you have ongoing concerns about the small lump you should discuss with your surgeon. Early irregularities along the stitch lines particularly in the creases under the breasts are very common with breast lift surgery. Be patient!
I think if you are concerned about a lump then you need to ask your surgeon to evaluate it. Best of luck, otherwise your breasts look nice.
At this point in your recovery you seem to be on the right path. Everything looks to be healing well and in the right place.
Great EARLY result. Allow 3 months healing than ask about these concerns at that time................