@vivuscraig Aah, one of the great mysteries of surgical experiences. After 5 hip surgeries and quite a few others, I can tell you this is quite typical.
No two surgeries are the same. Surgery is an assault on the body, and how your body responds each time is a function of many factors - whether your overall health is the same, what the surgeon found (more or less difficult surgery), length of the surgery, etc. I had a lot more swelling after my second hip surgery than the first - the PA said it was because my surgeries were "too close together" (8 weeks) and therefore my body reacted differently.

It sounds like there is more lymphatic fluid in your tissue than last time - this means your immune system has reacted to the surgery by recruiting resources to help cleanse the area - of surgical debris, old blood, etc. The added pain could be a result of the swelling or of a more difficult surgery (more sawing & pounding to get the implants exactly right.)

You could try a little gentle massage of the area to help move the fluid so your kidneys can eliminate it. I also found that drinking more water and moving as much as possible helped.

Have you talked to the doc or their staff?
Sue