Hi Guillermo,
I am happy to read you are developing a trading strategy. Keep testing it for at least a month so the results will include all the news events that can affect the trade results. If you are getting 50% in a couple of days I would think your lot size is too large. This could cause severe draw down when the next high impact news events occur. Be sure to use good money management to keep risk under control so you don’t blow your account. Professional traders never risk more than 2% on any one trade, and when taking multiple trades they never risk more than 6%. While you are in the process of developing a trading strategy also keep in mind to develop a good money management plan as well.
Alan,