Do bubbles for Vitrectomy break up?

About 6 weeks ago I had a vitrectomy for several retinal tears.  A gas bubble was placed in my eye.  I just noticed that all of a sudden there seem to be 2 smaller bubbles that are attached to the one that was there.  Is this normal?  Is the bubble breaking up?  Or could this be some blood (or a large dark floater)?  The bubble itself seems to be about the size of a lemon, seen from the front and the small one is about the size of a pea.  But the "pea" is getting bigger.  And now there is another tiny one which travels around, and sometimes seems to tuck into the space between the bigger small bubble and the full size bubble.
Is this normal, or will i need more surgery or etc?

[Houman Vosoghi, MD]

Yes, they do sometimes break up into multiple bubbles.  You should call your retina specialist though and make sure things are as expected for your specific case.

HV