Welcome to the forum. Tell me about it. My ENT told me during my toughest time that the only way to stop my ringing is to shoot me. Gosh!
As far as the reason for the T increase, there are many causes, single or combined, which can trigger or aggravate tinnitus including by not limited to drug reaction or side-effects from ototoxic drugs, ear wax build-up, ear or Eustachian tube infection or ETD, ear drum injury, fluid build-up in ears feeling pressured or fullness, sinus infection & congestion, TMJ, TTTS, high blood pressure or blood circulation problem, loud noise exposure or acoustic trauma/shock, head trauma & injury, neck injury or muscle problems, hearing loss, Meniere's Decease, barotrauma from sudden change of air pressure such as during landing & taking off on flights especially with blocked nose causing failure to balance the pressure changes, slapping of the ears, deep grief for the loss of loved ones, untreated sleep apnea, extreme, extended stress, anxiety & panic disorder, etc., etc.
T can also be caused or made worse by unhealthy diet such as too much salt, sugar, caffeine, MSG, alcohol etc. or by lacking some mineral or vitamin supplements, such as Magnesium, Zinc, B12, D3 etc.
Since your T is so new, you may want to get some prednisone treatment to see if it helps. Also you may want to try masking T if it hurts so much. If you haven't done so, here are some suggestions. Take care. God bless.
1) Mask at bed time if having trouble sleeping, by using a sound pillow or sound machine with pillow speakers. There are good sound machine & pillow therapy systems like this one:
https://www.amazon.com/Sound-Oasis-...d-Oasis-Therapy-System-Speakers/dp/B00MH5HKTA
2) If you need masking on the go, try load an ipod with nature sounds or music using itune. If you have a smart phone, you can download free APPs for soothing or T-masking sounds. Use wisdom in the use of headphones or earbuds as extended use or excessive volume may hurt your ears. Try set the volume slightly below that of your tinnitus.
3) With PC & speakers, you can try these excellent masking sounds to see which one masks best:
TT's excellent audio player:
https://www.tinnitustalk.com/audioplayer/
or this online sound library, particularly the self-mix nature sounds:
https://mynoise.net
or download free sound generator 'aire freshener':
http://www.peterhirschberg.com/mysoftware.html
or click play to mix these sounds with this simple sound generator:
http://asoftmurmur.com/
or search youtube with words like 'tinnitus masking sounds', 'white noise', 'rain sound' etc.