What Causes Spotting Accompanied With String Like Discharge During Urination?

Hello! I was just very curious about my urine. I just recently used the restroom and what I had seen was white, sort of like string type things, in the toilet bowl. Before this, I was having a bit of spotting so I was thinking I could be pregnant, also planning on getting checked, but when I seen this, I did not know what to make of it. Please answer me back, I'm very frightened!Thank you for your time!