Dark brown spotting consistently , ovarian cyst

How concerned should I be about dark brown spotting consistently 2 weeks after I menstruate given my history with an ovarian cyst?

I was diagnosed with a left ovarian cyst a year and a half ago, no symptoms whatsoever. From Feb 2009 till June 2009 I had many abdominal and vaginal ultrasounds to keep an eye on it, but because it was asymptomatic my doctor was not concerned. Now without insurance I have not been back in a year. This spotting just started happening 6 months ago, I have NEVER had mid-cycle bleeding/discharge before this. There is no itching or burning, just some mild cramping when the discharge starts. It's enough that I should use a panty liner, but nothing heavier is necessary. It usually lasts about 2, maybe 3 days.

So should I foot the bill and see my gynecologist 100% uninsured? I know the ultrasounds can be super expensive so I am worried. Any ideas what it could be? Maybe the cyst is now breaking up and reforming each cycle? Maybe it's unrelated?

Thanks!