Lumpy filler. should I be concerned?

Facial fillers using Hyaluronic acid can cause immediate swelling and uneven contour. The swelling usually subsides with time. I recommend applying Plato's Bruise Balm twice daily for a few days after injecting my patients. If the filler lumps do not resolve, then a small injection of Hylenex usually can correct an HA filler that is overdone. If Hylenex does not work, combination injections with verapamil or corticosteroid IIT may help. 
In some cases, Venus Viva RF can help tighten skin thereafter. 
Best 
Dr. Karamanoukian
Realself100 Surgeon

Thanks for sharing your question and photos and sorry to hear about your experience. It's hard to comment without knowing which filler was used and where it was placed. If you are unhappy with your results, I would probably start by following up with your injector to discuss your concerns. I suspect it will probably be best to wait for the filler to dissipate on its own. After reviewing your before photo, I think you would have been a good candidate for Sculptra filler treatment. Sculptra is a collagen stimulating filler which could be used throughout the face to correct volume loss.