Kristi,
I am a 36yr old male and I just had the hip resurfacing with Dr. Mont 10 days ago and I too had reservations. Much of it was based on the uncertainty of the coming surgery. If i knew then what I know now, I wouldn't have been nervous at all. I'm up walking easily on crutches and have taken only a handful of tylenol since coming home from the hospital. I have almost no pain since coming home from the hospital on day 4.
A lot of people here report they are back up doing x, y and z after a few weeks. I'm a bit more conservative and plan on taking it very slowly. The great news is ALL of the pre-op arthritic pain is gone and much of the range of motion is back. My surgeon, Dr. Mont in Baltimore who has performed > 2000 hip resurfacings, also released some tendons and made a 7" incision. Most people here report some muscle pain and swelling/bruising in the weeks after surgery. I think that is normal. You should plan on having someone to help you in the several weeks after surgery.
I'll rephrase some good advice someone gave to me...You've done the research to find a surgeon you are comfortable with, to get the surgery you need b/c of hip pain you have been living with for X amount of time; relax and know that soon you'll be pain free back playing with your kids and no longer constantly thinking about your hip. I wish you all the best. Cheers. -Scott