hey i have been doing Penis Enlargement for a good 4 months now and i have gone from 7 1/2 inches to 8 inches erect length and, 5.5 inches to 6, my gf recently came down for 2 weeks and we had sex almost every day sometimes twice, by the end of the two weeks my cock looked drained and fatigued and also gone to 5.5 inches in girth again, i was wondering if this is common as a temporary thing or if i have to start again to get back up there??