How Long Should I Leave my Dissolvable Stitch Alone?

It sounds like you are spitting a few absorbable sutures. It is not uncommon for a few superficial sutures to come to the surface and poke out near an incision. Generally, they pose no risk, but they can be annoying. Sometimes, they will lead to a small localized infection. The suture material will usually dissolve after several weeks, but the spitting sutures can also be easily removed by your surgeon if they are bothering you. 

Hi there,
What you experienced is very common post tummy tuck surgery and it's simply a stitch sinus where the dissolvable stitch didn't get dissolved in time and make its way up and poke through the skin. Sometimes they may cause some irritation or inflammation, similar to a pimple. It'll be best to leave it alone and it will resolve with time or trim the end of the stitch close to the skin. 
Obviously if there is any signifiant degree of excessive redness, tenderness or even purulent discharge, you should contact your surgeon immediately for a timely assessment to rule out any early signs of deep infection.
Hope this helps.
Best wishes
Ellis Choy

Thank you for your question,
most of the dissolvable stitch should start to dissolve or fall out within a week or two, although it may be a few weeks before they disappear completely. 
If your wound has healed and your stitches are bothering you, you might want to consider making an appointment with your surgeon to have them removed.
good luck.