What Are the Signs of Wound Healing?

It’s not unusual for patients to have small areas of wound
separation following abdominoplasty surgery.When this occurs wounds heal by a process known as secondary intention. These
wounds form a layer of granulation tissue which covers the base of the
wound.Granulation tissue slowly grows
and decreases the size of the wound.Once this occurs, new skin forms around the margins of the wound and
migrates in an inward direction eventually closing the wound.While this is occurring, the wound is
pulling its edges together to ultimately decrease the size of the scar.Occasionally, patients may need a scar revision once the
wound healing is complete, but this is uncommon.Even when wounds breakdown and patients
undergo a prolonged period of wound healing, they still report high
satisfaction rates following abdominoplasty.

The white spots in your incision may be fibrin and protein clots.  If there is an opening you're going to need to pack the hole with a moist sterile gauze and change it a few times a day.  A PS should take a look at it, preferably the one that did your TT.

It is hard to say without seeing your photos; I would recommend seeing your operating surgeon for his/her advise.