2nd Hip Replacement Swelling worse than first hip replacement

I am 7 days post 2nd hip replacement. I had little swelling and pain during my first hip replacement.

I currently have significant swelling upper thigh inside groin area. Also pain is more than first hip at this time post surgery.

No hint of infection. Temp is normal. No smell or seepage from wound.
I am just wondering why my second hip replacement experience is different than my first? Is the swelling something to be concerned about?

Thanks so much.
Craig