Purple spots in lip after hyaluronic filler. I think it's where the filler was injected, not really sure. What could this be?

The timing of the appearance of these purple spots is unusual; I would recommend that you schedule an appointment with whoever performed your injections. It is not likely to be bruising or tindel effect.

This is difficult to answer without pictures. It is unlikely that bruising would appear 5 weeks after injections. I recommend following up with your Doctor. If necessary, your injections can be reversed with hyaluronidase. It may take a series of treatments. See an expert. Best, Dr. Emer

Dear cll12345,it is hard to give you an answer without a photo of your lips. Purple spots in the lips are usually caused by bruising. I would suggest you to check it with your plastic surgeon.Daniel Barrett, MD, MHA, MS 
Certified, American Board of Plastic Surgery 
Member, Am. Society of Plastic Surgery