Hello,
The blood under the skin which causes the discoloration of bruising should be totally reabsorbed by the body in three weeks or less. Since there is a lump under the adam’s apple also, I would like to rule out any enlarged lymph nodes or thyroglossal cyst.
To confirm the diagnosis I suggest you to get it evaluated from your doctor.
It is very difficult to precisely confirm a diagnosis without examination and investigations and the answer is based on the medical information provided. For exact diagnosis, you are requested to consult your doctor. I sincerely hope that helps. Take care and please do keep me posted on how you are doing.
Have you figured it out yet? I have the SAME exact thing!