Anyone have/had a "Baker's Knee Cyst"?

I injured my knee pulling a calf and it was sore
for 2 weeks….the injury wasn’t bad. Then I wake
up with this tendon behind my knee and googled
it and I have a Baker’s Cyst.
I haven’t been seen by a Dr. but heard stories
of people dealing with them for years and it
is making me depressed.
Is there anything I can do to make it go away?
How do I treat it?
I feel like I turned 60 and everything is falling apart!