Yeah, the whole anterior approach "thing" really caught on, but the truth is that there is very little difference in recovery rates. Could be that there is some pain in the left from compensating and adjusting. Could be the left was making adjustments and those adjustments meant that the muscles on the left side were not working in the way they are working now that they can trust the other side.
Recoveries take time and being in great shape doesn't guarantee a faster recovery. I was frustrated with my recovery at your stage and I went to PT at six months. Picked a really smart PT person who helped me a lot. I think all kinds of muscles had gone to sleep in the years leading up to my surgery--even though I was more active than most hip patients. My PT was as much about getting back in shape as it was about recovering from the surgery. Of course, those overlap. But if you consider PT, I say don't go to a PT who is just going to work you hard. Find someone really sharp and thoughtful, who can design specific exercises based on diagnosing specific muscular weaknesses.
There's a good chance though that your issues will sort themselves out over time. But since you're highly athletic (and probably had very high expectations--as many athletic people do) you might really benefit from PT, especially if you find yourself demoralized.
One of the secret benefits of going to PT is the way a good PT can calm our nerves and fears and help us notice subtle progress that we might otherwise be missing.