Hi
@Odieodell , since Tylenol is not an anti-inflammatory, I doubt that it'll help tamp down swelling. My go to pain killer/anti-inflammatory is Advil (Ibuprofen), which I used a lot of years ago when I used to run marathons and ultras ... so when I had my TKRs, I knew my body'd tolerate it well. I'd also use Aleve as a secondary pk/a-i. That said, like you noted, it's good to be aware of unwanted/expected side effects.
In re the bike ... when moving the seat up closer to increase the knee bend required for a full rotation, do so as incrementally minute as possible ... and carefully gauge the effect of the new bend on your knee before again incrementally increasing the bend.
In re lymphatic massage, a user on this forum had mentioned it to me months ago ... leading me to look for what it was on YouTube. I'm sure my version of the massage might not count as a true "lymphatic massage" but it really did the job amazingly well ---- that in conjunction with steep elevation while massaging. I've since stopped doing it since neither my lower leg or thigh swell anymore - regardless of amount and level of activity. In re my knees themselves, there's a tight band feeling that's pretty much always there ... very slowly receding. In terms of degrees of tightness - if my right knee (7 months) is a bacon cheeseburger, my left knee (12 weeks) is an extra extra extra bacon cheeseburger.
When subjected to heavy activities, the swelling in my knees are largely internal - so I can't get at it by massage ... elevating my legs does the job, with the occasional Advil or Aleve.
As folks are quick to point out in this forum, all knees are different and exercises/etc that work for one person/knee might not work at all (or might even be debilitating) to someone else.
All the best!