At this relatively early stage it's not necessarily a cause for concern.
As always, it is difficult to assess this without seeing what you looked like before and knowing exactly what surgery was done - surgical excision, lipo of surrounding areas including the mons, etc. If nothing was done to the area and it was a little full before, then the excessive swelling is completely to be expected. And it can take a while for everything to settle down - several weeks for most of it, several months for all of it.
If, however, at several months that area is still relatively fuller, then you may want to touch base with your PS to see what, if anything, can be done. If lipo of the mons was not done as part of the TT you could consider having it done as an additional procedure; if it was done and there is still some fat, you may want to have a bit more taken out.
Regardless of the approach, you should contact your PS and discuss this with him or her to make sure that the two of you remain on the same page.
I hope that this helps, and good luck,
Dr. E