I checked and your profile notes you are 22. Very often people's vision gets worse while they are growing, and sometimes a bit longer as it seems in your case, it isn't anything to worry about unless your doctor has found some other eye health issue. Usually the level of nearsightedness stabilizes by somewhere in the mid-twenties, though often it happens earlier, it does vary by person. That is why those who perform lasik surgery make sure someone's prescription has been stable for a while before planning surgery. Rarely in some cases of extremely high myopia, "pathological myopia" it might keep increasing, but you are too young to determine if that is the case and you don't give your prescription for us to know how myopic you are.
If you can see up close without glasses its likely you are myopic (nearsighted). It's not the vision without glasses or contacts that important its the vision with glasses. If you send your glasses RX and your vision distance and near with and without your glasses we can tell you more. The most important thing is see an ophthalmologist yearly. At some point contact lens or lasik surgery might be a good option.