3 months after lipo I have a knot on my stomach & hips, massage it 3 times a day. Is it normal? (Photo)

In my opinion, the end point of liposuction can vary from patient to patient and can be as long as 6-8 months.  The knots may be post operative scarring, swelling, inflammatory reaction, etc.  I do think it is too early to tell, at least from the limited information presented here.  I recommend you continue to communicate with your surgeon.  Surgery is controlled by the surgeon while healing and recovery has much to do with nature and the patient's own body.  Good luck and be safe.John T. Nguyen, MD, FACS, FICSDouble Board Certified Plastic Surgeon 

if the "knot" like swelling is not completely resolved in another 6 months or so you must return to your doctor for a possible touch-up lipo. it might be an area that needs more liposuction in order to smooth it out. 80% of my practice is based on correcting post-liposuction defects and it can take more than one procedure to have it fixed

Might try ThermiTight RF or other RF or even CoolSculpt area to destroy any fat or scar internally. But best to seek second opinions IN PERSON, very hard to be sure what is going on without IN PERSON examination...