I hear ya!
Hey man, there’s alot of us in the same boat as you. I’m about the same length as you, but less girth. I exercised for 5 weeks, then missed a few months but now I’m back at a regular routine and sticking with it. I never had a girl come out and say I was small, but from one girl I know what she thought. It sucks. I will say this and hopefully it helps, in the 5 weeks I gained 3/8” erect. That’s not alot, but picture what 6 months may do. Relatively speaking, that’s a small amount of time compared to 14 years ago. Good luck, pick a routine, vary it until it suites you, and stick with it. You’re not alone.