Bowel issues?

I had surgery on may 10th, ever since I came home my bowel movements are not the same. A few weeks after I got home I had sharp pains in my stomach one day,

And then never again? Not sure if it's related or not. I noticed an increase in mucus that seemed to stop, until a few days ago when I had diarrhea with almost all mucus in the toilet. Then. It stopped. Now everything freaks me out. I sometimes see orange flecks on the toilet paper after wards. Or black flecks. And I also randomly notice little balls of fluffy white stuff in my urine. Not everyday and not every time I go. I saw my general doctor who told me not to worry since I had no pain, and not constant diarreah and the stuff in my urine is probably just discharge. But they didn't do a urine or stool test. I'm just very anxious.. any help?