Chin Implant - How Should It Feel

Recovery after a chin implant surgery can very from patient to patient.  Typically after 3 weeks there should be hardly any discomfort, although one can still experience the "strangeness" of the implant, this should go away in 1-2 months.  No sure what you mean by "crustaceans", but the wound should be well healed by now.  Chin implants rarely get infected, but one of the presentations of low grade infection is non-healing of the wound and persistent mild discomfort.

As with any procedure, a surgeon should do proper planning for chin implant surgery.  This includes studying the patient's lower jaw anatomy, surrounding skin, etc.  This will allow for proper implant selections and proper surgical approach.  Even though chin implant surgery seems easy to do, it does take skill and experience to create a beautiful and proportionate Chin implant projection  and trouble free recovery.
 

Without an exam and seeing your op report specific questions can not be answered. However, I am happy to give you some guidelines. Recovery from chin augmentation surgery will vary with the the type of implant and incision used, and whether other procedures were done at the same time. The chin augmentation recovery process is not considered to be painful relative to other surgeries; oral medication will control pain for the first few days, and after that no pain medicine is typically needed.The evening of your surgery date, your lower lip and mouth may feel numb, as if you’ve been to the dentist. As sensation returns, your lower jaw will feel tight and sore from your body’s natural swelling response. It is at this point that you can take your pain medication,if necessary. You are encouraged to engage in light activity.If your implant was placed through an incision beneath your chin, the sutures (if they are not self dissolving) will be removed after 5–10 days. If your chin augmentation was performed through the mouth, you will be on a liquid or soft-foods diet for a few days while your mucosal skin heals. You will rinse your mouth out regularly to keep the incision clean. The sutures will dissolve on their own over the course of a few weeks.You will experience an odd sensation in your chin for a time while your nerves return to their normal function.

Be patient. These are common concerns in the first few weeks. It usually takes 3 months to settle down. See your plastic surgeon regularly until everything is resolved. Wait at least 6 months before revising.