One Week In - Blue Balls and Raging Hormones

So about five days ago I realized I'd gone a couple of days without fapping, and had the thought to continue as an experiment. I started masturbating around age 13 and infrequent PMO a couple of years later. I was never really addicted to P during high school, but that changed once I went to college where I became an almost daily PMOer. For reasons I won't get into I didn't start having sex until I was 21. The first time I got sexually intimate with a woman I had ED, which I chalked up to nerves and booze. The next woman I had sex with I was much more comfortable with, but the condom killed my erection anyway and a couple of hours into bad PIV/foreplay and oral sex I had to have her rapidly jerk me off in order to come. I liked her a lot, but the relationship didn't go anywhere, perhaps due to my poor performance. After a while I came to the conclusion that my PMOing had probably conditioned me to only respond to a certain type of sexual stimulation, but didn't act on it. My random two-day abstinence reminded me of the idea, and I found my way over to YBOP where my suspicions were confirmed.

I've now gone for a week, and once I made up my mind, it really wasn't hard to stop watching porn(though installing a filter early on may have helped), and I don't get any porn-specific cravings, just a general feeling of extreme horniness that has ramped up along with my testosterone levels and my confidence around women. It's pretty clear they've taken notice. This has lead me to charge head on towards multiple potential relationships I've let languish out of apathy. Where before I'd set my sights on one girl, using her as an excuse to be inactive with the others, now I'm chasing all that come my way, and the prospect of rejection no longer phases me.

One problem with this is that I've been fantasizing a lot lately, leading to erections, some minor stimulation(not really edging, though at this point just my imagination gets me close), and the worst case of blue balls I've ever had. They're really bad, and when I get some indigestion or gas, I feel sick and they become almost unbearable. Do you find being smarter about what you eat and coffee/cigarette use helps in dealing with blue balls? Maybe they'll be easier to handle if my body is otherwise close to homeostasis.

How should I go about dealing with fantasies? If my Blue Balls get too unbearable and I feel I have to MO, can putting myself in a certain mental state and focusing on certain things help minimize the negative effects of the relapse? Also, would casual sex be a positive or negative thing at this point? I'm thinking that might be the best way to cure my blue balls, but it would also do crazy things to my hormones.