After 5 months, you’re ready to venture into new exercises and it seems that your penis needs them. In my case, I gained some length but no real measurable girth during my conditioning months. Therefore, I started with a girth focused routine with a lot of squeezes. They seemed to help but the measurable gains were still modest. I added in some flaccid bends for a few weeks and then started supra slammers. The supra slammers were the first time I really saw my girth measurably expand during training sessions. I strongly suspect the build up of squeezes plus flaccid bends over the prior 2 months prepared my penis for its growth spurt. I made most of my girth gains in those 2-3 months but have plateaued again as I refocused on a more balanced length-girth routine.
BTW the shock therapy is a real concept for overcoming plateaus but I’d recommend just adding more advanced girth exercises to your newbie routine.
11/20/2011: BPEL: 6", MEG: 4.75" (goal BPEL: ~7", MEG: 5.25")
5/9/12: BPEL: 6.5", MEG 5" (goal BPEL: 7.25", MEG: 5.5")
3/5/13: BPEL: 6.875", MEG 5 5" (max goal BPEL: 7.5", MEG: 5.75")