Although there is no clear contraindication between the procedures I would advise to book teeth whitening first at least 48 hours piror to your lip filler appointment This is to enable enough healing process (2 weeks) for your lip filler post treatment.
This looks like a combination of technique and possible reaction to either dissolver or filler, depending on the timing. Some of the filler may still be present and has crossed the wet dry border of your lips. If there is no palpable filler this could also represent an blister due to allergy of either the filler or hyaluronidase. These cysts can develop when hyaluronic acid like Restylane or Juvederm is injected too superficially into the skin, causing these "blebs". Or the filler may have become moulded into a ball. Nodules and blebs generally look like white or skin-coloured lumps and are painless and harmless, you might need further dissolving in the correct layer. To treat these, a practitioner will either massage and warm them with a compress, then the nodule is punctured and the filler is released.
Sometimes, if these lumps, bumps, or swellings occur weeks/months later, they can be a little tricker to manage. As well as dissolving there may be a need for antibiotics or steroids to full manage the problem. On these occasions, a medical injector will assess your medical history and prescribe the correct medicine, or procedure, to fix the complication.
It is important that you are looked after by somebody who can medically manage you - having specialist knowledge of aesthetics treatments and their complications.
Prp can be done right away if it’s purely your own blood. Laser treatments on areas that you have recently tanned should be avoided.