What next?

I am at wits end here.  On Monday night, I got up to visit the bathroom.  My left knee was so sore, I could barely stand on it, never mind get to the bathroom.  I spent the day with a cold pack on it every few hours, rested it and hobbled around with a cane.  I took pain pill.  That evening I spent about 5 hours in the er.  They did ultra sound tests on both legs.  The clot is still in the right leg, but is smaller.  They found a cyst at the back of the left knee.  Sent me home with orders to follow up with the PCP.  He was going to refer me to the bone doctor in the same office.  I have not heard from that fellow, yet.  The knee felt better on Thursday.  I've been able to get some work done.
It is so frustrating.  I've been doing the twice weekly job searches.  Now, if I do get an interview, I'll have to turn it down because my knees won't let me get anything done in  a timely manner. 
On top of all that, sister has come down with something.  Either she has some wild flu that has her laid low, or she has gall stones.  I have not seen her this sick since she was on chemo.
I thought I saw that light at the end of the tunnel.  Where'd it go?