its like I am hearing my own story! Here is what I found...the streaks (for me) were an anal fissure. And if I had a run of constipation, or diet change, or anxiety, the blood could get worse. (I'll see your TMI, and raise you!
) The C/R specialist that I saw on this told me that fissures can take a LONG time to heal, and that anxiety can make the sphincter (sp?) muscle tighten even more...which leads to more fissure issues, which leads to more anxiety....you get it.
The right side pain was an anxiety bogey (meaning muscle contractions based on body's reaction to anxiety)... and it presented itself in the exact same way that you mentioned it.
Now, obviously I am not you - and if it really worries you see a doc (at least they can also give you good creams that help healing faster). But I will also say that stool softeners and fiber helps alot.