4 weeks post op, noticed more drainage than usual and wound separation. Advice? (photos)

I would wait till the office contacts you. Of what I see in the picture doesn't look like anything to panic,but I would make an appointment with your board certified surgeon to assure yourself of what is going on.

Dear nikitaxo,this type of wound is not uncommon after breast lift. It is usually caused by poor blood flow. I would suggest you to consult your plastic surgeon, follow your surgeon's instructions and keep your wound clean and covered. It can take few weeks or months for wound to fully heal. Daniel Barrett, MD
Certified, American Board of Plastic Surgery
Member, American Society of Plastic Surgery
Member, American Society of Aesthetic Plastic Surgery

to develop 4 weeks out but you can never be 100% sure.  When the implant is exposed, there is usually a lot of drainage as opposed to more spotting.  Your surgeon knows what is under that wound and you must see him/her to be evaluated and to determine if your implant is involved.  Knowing that the junction of the incision is always a weak link, I always have healthy tissue beneath that, just in case the skin may break down.  If your surgeon does the same thing, there is nothing to worry about.