I got tear trough filler over 2 months ago, now underneath my eyes have swollen and become very painful. What do you advise?

Thank you for your question and I'm sorry you're still experiencing negative side effects. At this point, I would recommend following up with your injector. 

Hi and thanks for your question.Sorry to hear that about your negative outcome . Lump and tenderness after 2 month injection needs medical attention as this can be due to different reasons such as infection or reaction to the filler I highly recommend you to see an expert physician for consultation

At this point, based on your symptoms, I would recommend following up with your injector for further assessment. Best of luck! 

Occasionally there is swelling and tenderness after injections of dermal fillers into this area.  In most cases  at 2 months  one would expect the discomfort and/or swelling to have subsided.  You should contact your provider and be re evaluated These symptoms could be indicative of an infection, allergic reaction or too superficial placement of the product.

Most likely you will need to have the filler that was placed in the tear trough dissolved.  You may not be able to tolerate having these products in that area.  They balloon out as they become hydrated and generally this does not resolve on its own.  Fat injection may be a better option for you.

Without an in person consultation it is very difficult to assess your concerns. It is best to return to the provider so they may evaluate you.

It sounds like either you are having a reaction to the filler, have an infection or the filler has been put in the wrong place.
I would expect some bruising and discomfort for a few weeks then everything should settle and get better.
I advise you seek a consultation with the injector in case you need hyalase/antibiotics but otherwise, cold compresses, moisturisation and massage should help.
James

Hello - thank you for presenting this issue. 
The tear trough area or the area where we get deep hollows under the eyes is the bottom of a network of complicated and delicate compartments of the eyelid. Much of the drainage of your normal tear production, and the lymphatic drainage of the eye when you have, say allergies - drains in this region. Several things can happen that could give you the symptoms you are presenting. 
Most importantly- you need to be seen by the person who injected you or their colleague so they can evaluate the tissue first hand. 
The main things to think about are: 
 filler in a compartment that is compressing the drainage of the normal fluid from the eye. 
This can create swelling that looks almost like a blister on the surface of the skin, or it could be deeper and look like you have a bump or swelling deeper, that pushes out . If the filler is closer to the surface, there can be a blue tint to the skin - this is called a Tyndall effect. The filler may be in a compartment not intended.  or the swelling from the procedure or the product could create compression that will not allow for normal drainage. Some fillers can be dissolved - it is worth getting evaluated asap,
The type of pain you are having might help to -if it is behind the eyeball, or traveling toward, the center of the nose between the eyes, up the middle of the forehead- etc. These are much more urgent types of pain and you need to be urgently evaluated.  Additionally - if the skin in or around the area treated is dusky gray, or pink and painful- that is extremely  urgent - 
If you are not improving and certainly if you are getting worse- it is time to be seen. If not by the injector- by a colleague, or someone. But I would get it evaluated ASAP. Especially if you have pain behind your eye, or feel like it is bulging forward, or see any skin changes 
I hope that was helpful! 
Dr R