Nothing is working for you... it is just temporarily. 1000 of people have tried before you did. Don't you know?
Do you know at least why it is working for you so far? Well with 3 years experience you are supposed to guess the answer. This answer is obviously temporarily, that's why at some points, if you don't stop your strategy before it happens, you will be in trouble.
I'm not a martingale hater as I have developped my own one... a tricky one, 10 times smarter that the one everybody uses, but not so easy to use.
Good luck anyway...