HELP Shenron the Pacman Frog - VERY Swollen Upper Lip!

[skellyx]

1. Size of enclosure - 10 gallon tank
2. # of inhabitants - 1 Ornate Pacman Frog
3. Humidity - 80-85%
4. Temperature - 67°F in cool area, 75°F in warm area
5. Water - Distilled water for misting and water dish
6. Materials used for substrate - Eco Earth Coco Husk
7. Enclosure set up - Artificial plants, substrate changed every 3 - 4 weeks, lots of shade, artificial rock hut to hide under
8. Main food source - Crickets
9. Vitamins and calcium? - Crickets dusted with D3 and calcium, probably not as often as I should
10. Lighting - Night lamp (purple bulb) 40W (lamp has a dial for temp regulation) - 12 hours per day
11. What is being used to maintain the temperature of the enclosure - Night lamp for and heat pad on the side of the tank
12. When is the last time he/she ate - Today
13. Have you found poop lately - Yes
14. A pic would be helpful including frog and enclosure (any including cell phone pic is fine) - Pictures to follow
15. Describe frog's symptoms and/or recent physical changes; to include it's ventral/belly area - Frog has a swollen lip that has slowly been getting bigger over the past few weeks. It is even on both side and is not squishy. It is getting pretty big though and I'm worried. Other than that, he has been eating "normally" (ever since I got him he hasn't eaten much, in the past two months it's been harder to feed him but he has been eating). His lower jaw looks fine, his legs and belly look normal (no swelling or redness).
16. How old is the frog - Between 1 year and 1.5 years
17. How long have you owned him/her - Since he was about 6-8 weeks?
18. Is the frog wild caught or captive bred - Captive bred I believe, got him at a reptile show
19. Frog food - Crickets, he has eaten a few small horn worms, but he won't eat worms any more. I have tried wax worms and silks.
20. How often the frog is handled - When he was hunting food, I would take him out every 2-3 days to put him in a feeding area (he was impacted once). Now he is tong fed so he is handled less.
21. Is the enclosure kept in a high or low traffic area - Relatively low
22. Describe enclosure maintenance (water changes, cleaning, etc) - Substrate changed every 3-4 weeks, water dish changed weekly, cage is misted as much as needed for humidity, usual a few times per day. There is a mister set up for when I am at work, etc.

***Tried to upload photos but it won't let me upload a .jpeg, it says it is not valid image file.