I could be wrong, but from your explanation, it doesn't sound to me like you gave hair loss treatments a fair shake.
First of all, 1 month is nowhere near enough for dutasteride or finasteride, at the very least wait 3 months to see anything, preferably 6 months.
It sounds like you are trying out treatments for 1 month and since they don't work in 1 month you chalk it up to being a non-responder.
Imagine you're overweight, and you exercise for 1 month, trying out only one method of exercise, and you don't see any changes in the mirror. Would you say exercising just isn't for you? That it will never work because that one exercise you tried for 1 month didn't make you look better in the mirror? You have to try different exercises for a certain number of months, take pics, and be patient. It's the same with hair loss treatments, even harder, growing hair is more stubborn.
I guess I'm very paranoid so if I start using something and it causes more shedding I tend to freak out and assume I'm having an allergic reaction or something. The only thing I've tried long term was finasteride (1mg./day for around 11 months). Had bad shedding even towards the end so I discontinued.