You've invested a lot of physical, mental, and emotional energy in this. Once upon a time, I would just take my chances, try it out, wait...still not completely better...run, ride, swim some more at less than full strength, repeat....maybe worsen my injury...repeat... Now I've greatly simplified the process. Something gets hurt, I take it to the doc. I stress less, recover better, and have an overall better performance in the long run. Does it still hurt? I would get it checked out. That way you could at least know and reduce the mental/emotional fatigue factor.

(I trained six months for IM, and about 3 weeks out my shoulder got seriously inflamed and immobilized. Big downer. I pushed it a couple of times, then went to my doctor, took his advice, and did some therapy - and had one of the best swims of my life, a sub 1 hour, which for me was great. His advice was really hard to take 3 weeks out from race day - stop swimming entirely. I did. Only touched the water a couple of times right before my race with the blessing of my doc and massage therapist. I think if I had kept on pushing - which I had been doing before I went to see him - my cycle of increasing pain and decreasing mobility would have continued and I may not have even made it through the swim)