Had Problems with Fat Transfer?

Lucinda,
You are still early after surgery. Fat grafting tends to swell - in some people very dramatically. However, after a few weeks, the swelling resolves and you will likely be pleasantly surprised.
That said, for other people reading this, please be very careful before you let anyone inject anything around your eyes. The skin is very thin here and sometimes overzealous or misplaced injections are not correctable.
I hope this is helpful.

Since you are just two weeks postop, this is very early indeed to be assessing the results of your surgery.
Fat grafts contain partially live tissue and partially dead tissue. During the healing process, blood supply and therefore swelling is increased. The dead fat is being resorbed and the live fat is being healed by new blood vessels. All these processes yield swelling, so swelling early after surgery is not only normal but expected.
You should communicate closely with your surgeon to determine the timepoint where injections, massage may be indicated.
Long term, direct removal of the fat grafts is often the best way to solve this problem, but that typically wouldn't occur until 6 months postop.

Give it some time.  The swelling may be due to the  fat injections themselves.  As long as it is not lumpy you probably will be ok.

The use of micro fat injection in the area of the tear trough and to camouflage lower lid/cheek problems is a valid alternative to lower blepharoplasty. However, this is a very technical procedure that requires accurate placement of the fat transfer.
We looked into a series of 100 patients (1) who underwent this technique and found that it is a good technique in patients with mild deformity or previous surgery with no skin excess. An under correction is always better then an overcorrection.
(1) The Use of Micro fat Grafting in Periorbital Rejuvenation: Review of 100 Consecutive Facelifts: 24. Hisham Seify, MD; T Roderick Hester, MD Sep 1, 2005 PRS
You are still early after surgery the following could be very helpful:
1- Lymphatic massage might help to distribute this excess fat over a larger area.
2-Kenolog injection (dilute steroids) might help but must be used very careful as it could cause skin atrophy and pigmentation.
3-If all this fails an open surgical excision could address the problem.
I hope this will help!