Advice on My Journey So Far and Blue Balls

Hello all. First time posting! (Well, aside from the classic ‘hello world’ one). I’m new to this journey and would be grateful for any tips you can offer. I am a man in my mid-30s, married, and have always been submissive during sex. My wife is somewhat of a reluctant dominant partner. We own items like a strap-on and a holy trainer which we use playfully, but our intimate life had lost its spark - she wasn’t very interested. Having intercourse twice a month was considered an accomplishment because daily life often got in the way and exhaustion set in quickly. I had been proposing for some time that I could perform oral sex on her without expecting to climax afterward. She hesitated due to guilt, and honestly, I lacked resolve; after going down, I would just beg her permission to cum, which she usually granted. However, I decided to change this dynamic - instead of asking to release myself, I asked her each night if I could give her oral. Within a few sessions, she realized the advantages! I took it further by sharing an online book with her about keyholder lifestyles—and indeed, the proverb ‘be careful what you wish for’ applies here. Her guilt over not making me cum has vanished. She now says that since this is what I desire, she will happily let me finish for her and then order me to bed. She clearly enjoys watching me stay aroused while leaving it at that. A definite shift occurred! It’s still very early—literally only three weeks in—but she appreciates the oral sex every couple of days, we are closer, kissing more often, and generally showing more affection. This morning over breakfast, she remarked, ‘I’m really enjoying this,’ referring to both our relationship reset and her easy access to orgasms. She now expects nightly pleasure for herself, and naturally, I love it! What surprised me was how much she embraced the denial side of things. Previously, I would cum three or four times a week. Currently, I am about ten days without ejaculation, and she indicates I need to wait another three days, perhaps even longer. She is already discussing her desire for my attentiveness not to drop once I finally do release (having read that point in the book I shared)—and how next time she might aim for three or four weeks. I feel very fortunate; while many men struggle to convince their partners, she embraced this quickly upon seeing the benefits. My current challenge is physical rather than mental: although I can now play along and tell her I don’t need to cum—agreeing to do so only when she decides—I have bodily discomfort. My device isn’t the problem since I typically wear it for short periods of about an hour or so. However, because I am not ejaculating, my testicles ache. Specifically, if my right ball becomes aroused and remains without ejaculation for a while, it swells up and feels lumpy. This has occurred before when I tried abstaining for several days. It is nothing medical or indicative of cancer; once I cum, things return to normal with no lumps remaining. But this buildup—what I assume—is quite uncomfortable. The throbbing can even wake me at night. Has anyone else dealt with this? I have searched online but found little information—and while ‘blue balls’ is often called a myth, it might be temporary as my body adapts. It isn’t pleasant currently, and I don’t want to disrupt her momentum when she is feeling so confident. I could suggest that she allows me to cum weekly, but that might ruin the dynamic; I hadn’t expected her to propose seeing me go a whole month without release, yet I also don’t wish to dampen her enthusiasm now. Any advice would be helpful. Thank you very much.