Red Shoe, I'm wondering why you're not still using your cane or stick if it's such a struggle for you still? If you still have pain, which tends to cause a limp, then you still need the walking aid. Are you still taking any pain meds? The groin pain and tennis ball lump feeling may mean that you are indeed overdoing it. At 8 weeks, many of us are feeling just well enough to return to our normal lives, and that often results in too much, too soon. Then it becomes easy for some tendinitis to appear.
You mentioned very tight thigh muscles earlier on....you got a deep tissue massage for that. Those tight muscles might be your IT bands causing some friction over your bursa....poof! Trochanteric bursitis starts to act up.
Here's a couple articles to help shed some light:
Trochanteric bursitis with THR
ITB (ilio-tibial band) issues and treatments
Iliopsoas impingement after THR
Iliopsoas syndrome
I am too intimately acquainted with the tight IT band/bursitis issue, but I have had enormously good success with frequent massage of the IT bands to break up the tight fibers. I started with every week for a month, then biweekly for a month. Now I'm ready to try just a monthly maintenance massage. If you had good results with your massage, I'd encourage you to continue if at all possible.
Do recognize though that 8 weeks is still very early in the healing process. It will be at least a year, up to two, before all the soft tissue is fully healed up. What you are describing is not at all unusual....but it is telling you to back off a bit and continue the mantra.....rest, ice, manage pain. Use a walking aid if you're still limping.
Sharon