New no fapstronaout

I'm a 24 year old here that's currently in medical school. This last year I started taking test-boosters and started noticing some changes in my PMO behaviour. I was starting to M 3 or 4 times a day, including a porn sesion with each M. I went from softcore to a "medium" hardcore then I suddenly realized my problem and that I had to do something about it. The first time I tried NoFap was a month ago, I lasted for 9 days first, then I had sex with a chick I met and went straight for 16 days until I broke it this past week. Being in my career stress builds up and I think that's a factor that's playing a mayor role. To be honest I've just had 1 girlfriend in my life and I'm scared of forming real bonds with any girl I know so I'm the type of hit it and quit it guy and my PM isn't helping. The 16 days I went with NoFap I experienced more attraction towards me from girls in school and on the gym/streets. I noticed a lot more energy while hitting the gym. I'm on my 2nd day at the moment. Btw do you guys count sex as a relapse?