Is this double bubble? Nearly 5 weeks post op under muscle. Was a small B cup pre op
When you raise your arms it does appear you have a double bubble - I would be curious to see if this occurs while your arms are at rest and relaxed. Also you are still early in the healing phase and this may settle over time. Speak with your chosen surgeon regarding your concerns.
I would like to see a photo without your arms raised to see if that implant is at or below the incision. At five weeks postoperatively, these implants will likely settle and alleviate this discrepancy between the bottom of the pocket and the incision. Close follow-up with your chosen plastic surgeon is recommended. Good luck.