Chastity and orgasm denial discussion

Dairy cows are what pop into my head when I hear ‘Milking’! For those who know the ropes, I have a query. The other day, I took some quality time for myself. A stretch of uninterrupted solitude. So I got washed up, soaked in a hot bath, and set things right. I used my Njoy wand to milk myself. It had been Locktober all month without an orgasm. As you can guess, I was full up. Since I’m new to both milking and prostate massage, I’m still working out how to locate the prostate. Almost as soon as I began, precum started flowing. In just one hour of milking, my t-shirt got so many spots and tiny puddles that I had to shift it around to find a dry patch. Here is my question. Twice during this session, and once on another occasion while massaging the prostate, I felt like I was about to urinate. I had already made up my mind: if the urge persisted, I would just let it happen. Just to see what occurred. I’m wondering if that sensation was linked to a load of cum coming down or something else. If anyone has gone through this too, please share your experience regarding what I felt. Unfortunately, the feeling faded away and I couldn’t replicate it or push myself back up to that level. It is definitely something I will aim for in my future milking sessions. Thank you for any insights.