At 2 1/2 weeks post-op, swelling is normal. Swelling that "moves" from side to side is usually indicative of changing dependency (i.e., laying on one side more than the other, allowing fluid to shift by gravity) while sleeping. This will gradually subside and eventually no longer occur. For now, sleeping with your head elevated above heart level will allow gravity to move the swelling down out of your face rather than from side to side.
I tell my facial patients (ANY surgery above the neck) to NOT lay flat for 3 weeks after surgery. Every patient says they will sleep on several pillows, but of course, once asleep, they turn from side to side, push and "dig into" the extra pillows, and rapidly end up with their face lower than heart level--let the swelling increase! I tell my patients to put a sofa cushion under the mattress (before surgery) and use their normal pillow post-op, which will keep their head slightly elevated--pillow use or not. Or, sleeping in a recliner chair or lounger that does not lay completely flat is another less-comfortable option, but both of these will help you to absorb fluid or let it shift out of the face.
If there is any increase in pain, redness, increase in swelling, purulent drainage (pus), or fever/chills, there may be infection starting; see your surgeon promptly! Otherwise, this is not unusual, especially for the operations you have had.