New Diagnosed, Stage IV - Need Answers

I am a newly dx 65 year old with Uterine Stage IVb cancer.  I am looking for any input  and suggestions you may have as a start down this road.  My story, 6 years ago, I was dx with Stage 1 uterine cancer, low grade which was found on a nodule after having a complete hysterectomy.  No chemo give, just follow up with Oncologist and my GYN doctor for 5 years.  Speed forward 5 +years - last November I went to my regular doctor complaining of nausea - thought it was due to eating fatty food.  Change diet, added probiotics -- but came back 1 month later - having some the same issues.  At this time, had my annual - all tests came back find except for low platelets and re-taking test in a month.  Recommended seeing a GI - doctor - which I did but this was during the holidays so I had to wait till after the 1st year to find an opening.  See GI doctor - she looks over all of my blood work, sees nothing irregular and suggest various things that I could do.  She recommended taking a sonogram which I did.  Get results back at end of January - mass on my liver, cyst on my kidney, gallstones and ascites.  Review results with my GYN and internist - they don’t believe results - they immediately have me see another GI.  This GI wants a full MRI - results of MRI are:  gallstones, cyst on kidney and pancreas and now  spots/seeding in my abdomen- liver mass is gone.  My doctors immediately try to get me back into my original Oncologist at UCSF. One trip to emergency room, lots of blood work, ascites removed and tested before I actually see the Dr.   Took about a 2 weeks to see her, she reviews the tests - she doesn’t believe that it’s the uterine cancer but rather a new cancer - not after 6 years and the type of cancer it was.  Ascites is benign and all tumor tests negative except CA-125 which is at 72.  She orders a CT scan because MRI not good enough for biopsy- another week delay.  I finally get the results 10 days later.  In trying to get results, following up with her office should have realized something was up as I was told that my case was going to the tumor board. Doctor called last night - it is in fact the same uterine cancer of 6 years ago but it is in my abdomen now.  

In discussing my treatment options- my best option was clinical trials or immunology. No details yet.  The clinical trial office in fact called me before my Doctor did - leaving a message. No surgery for me- as she said the nodules were too small and numerous.  So I will be calling them this morning to set up an appointment.

Questions:  Would you get a second opinion?  UCSF is suppose to be one of the best around here.  Stanford is close by but they don’t appear to have any clinical trials which meet my criteria. I am looking for who the best doctors are that treat this cancer- even just to get their input.

In looking around for other clinical trials, there were some others - back east -- does anyone know anything about other promising clinical trials?

What else should I be asking- I read about trying to understand the genetic background of the cancer to get better treatment options.

Any input and suggestions would be greatly appreciated.  I knew I had something - but this is not what I expected. It’s been a long two months to finally get a dx which I didn’t expect.  Totally naive.  I’ve completely changed my diet, started to add supplements and trying to get my head straight.  So I’m reading and trying out as much can as quick as I can.  I was reading all the old posts and they were very helpful.