Strange situation - seeking input

Had an interesting experience yesterday, and would like to bounce it off the group for comment. I was using my Vice, and after about 30 minutes of the low end sinusoidal vibration with the Aneros vibrator, I removed the Aneros vibrator and inserted my sonic massager. (See http://prostatemate.com/instructions/SonicMassagerInstructions.pdf - Note that my model is straight, and reaches the end of the Vibe). I used this on the high/low variable setting for 4 minutes (it has an auto-timer at 2 minutes, and I did 2 runs, so the time is certain). Near the end of the first run, it just felt incredible, and I had a small amount of discharge. This wasn’t unexpected, but hadn’t happened before. Maybe should have stopped there, but I did the second run, this time pressing a little harder – not to the point of causing pain, just made it more intense. Simultaneously I drew the Vice in tight with every muscle I could. Again, incredible feeling, this time to the point where I was shaking, and more discharge. Not an orgasm, at least not a normal one, and not a lot of discharge, but an awesome feeling that left me tingling all over for more than an hour. With the Vice out, I could trigger more good feelings by just giving a couple of strong squeezes. Ok, all that is good – here’s the maybe not so good part: When I removed the Vice, I thought there was more fluid that came out with it than the lube I had put in. Not a lot more, but some. The Vice was clean, no fecal residue, and there was no feces in what came out. I sniffed the Vice … and it definitely smelled like semen. I didn’t do a microscopic check for sperm, and didn’t fish any out of the toilet, but it just seemed very strange. I Googled it, and found a few possibilities – rupture, fistula, and rectal mucus. I had no bleeding and no pain, so ruled out rupture. A fistula is an opening between two body parts, so in this case between the ejaculatory duct and the rectum. The rectal mucus was a new one on me, but apparently the lining of the rectum produces it when stressed. I didn’t push hard enough to cause pain, but stress is possible. I didn’t find anything that described what the mucus smelled like. I have an appointment with the doc on Monday morning. Meanwhile, I feel fine, but am staying clear of my wife just in case, since if it goes one way, it could go the other way too. So, question to the group. Anyone else had a similar experience, other possible explanations, and how did it turn out?