I don't know if it's swelling or a seroma. I've had 2 protruding "lumps" in my lower abdomen for a couple of months now (Photo)

I suggest speaking to your physician and getting a formal evaluation to determine if this is swelling , fluid, or just anatomy.  Some people have this body shape regardless of liposuction.  If not, external heating devices and massage help.  Best, Dr. Emer.

Based on your description, it can be either a seroma or swelling.  The only way to know for sure is to see your PS.  He can either do an Ultrasound or try aspirating it to know for sure.

Seroma formation after liposuction is extremely unusual. However physical examination would be necessary to distinguish a seroma from swelling within the tissues.

Difficult to say without an exam. It could represent swelling, fat, or fluid. Sometimes a sonogram or MRI is helpful. 

After an aggression to the tissue, one of the answers of it is the swelling, the healing period for this procedure can take up to 6 to 8 month. Only with two month of surgery you can still be producing liquid that your body is taking to long reabsorb, i suggestion is to visit your PS, could aspire the excessive liquid or use a compressive method (increase the garment compression). 

Maybe a scan of the lower abdomen could enlighten all of us...........................................

 What you describe could represent a Seroma, Residual swelling or residual fat. At five months your results should be final or close to final. To determine how thick your layers of subcutaneous fat are try laying on your back and gently rolling the skin between your fingers working your way up and down your abdomen  and from side to side.  The fat adjacent to the bellybutton often requires more effort to be removed and this is an area that is not uncommonly left slightly uneven after liposuction. Skin laxity prior to the procedure can also contribute to slight uneven contours after liposuction.A Seroma usually feels squishy and when you press one area an area next to it will bulge. Kind of like a plastic bag with water in it.  They are usually diagnosed by physical examination and treated by having them drained with a large needle. And ultrasound can easily confirm if there is a Seroma 

My suggestion is to allow the area to heal for at least 12 months. After that time, if the swelling persists then selective and limited suction lipectomy can be done to get symmetry. You are doing everything you are supposed to do. Some patients can have prolonged swelling (edema).