Welcome! And...just wanted to jump in and mention a few things you might find helpful:
1. I'm at around 5 months post-op and I STILL have swelling and stiffness if I do too much. It's significantly better than it WAS, but it still happens from time to time;
2. Most of us here have learned that recovery is not "linear", meaning you DON'T NECESSARILY get a little better every day. Some do, but often you'll be going along just fine and then you'll be a little achier than usual one day or be very stiff for a day or so. It happens. We're not machines, sometimes the body just needs a minute to get itself together.
3. Whatever you do, please avoid comparing your recovery to other people's. There are Super Healers out there who will report that they leapt out of bed right after surgery, danced a week later, and went skiing a month later.... Yay for them....

but we ALL follow our own path. Some of us need more time. At 5 months, I get frustrated sometimes too, but I am reminded that my OS says that full recovery can take anywhere from 6 months to a year. A friend at work who's had both a hip and a knee replacement told me recently that the knee recovery was tougher, AND it took about 8 -9 months before she stopped feeling like her bionic knee was different from her non-op one.
Best of luck!!