For your shoulder/neck problem. Take a tennis ball and lean up against a wall, using it to find if there are any trigger points in your back (it will be extremely painful) once you find it, put most of your weight against it and just sit there, deep breaths. Anytime I have neck or back pain, its usually a trigger point, that is easily fixed using the tennis ball/pressure routine.
I also had some issues at 100mg a week. I cut back to 60 a week now and those symptoms have subsided. Everyone is different, and it was just way to much for ME personally. It put my total testosterone above 1000 easily. Had a 980 semi trough reading on 100mg a week.
As already stated, check e2.