I think it's very possible that your male is distracted by the female's scent, especially so nearby, and if he was my snake, I'd sure move him to a different room,
just to see if it helps. That's a long time for a boa to fast. I'm sorry but I cannot tell you what all that stuff is in your photos, & I'd be a little concerned about
the blood drops too. The first photo looks like just some urates, but with mucus. (& not like a sperm plug) He's a pretty boa, by the way. The female is eating?