judging from your stats (i looked at your profile) 1857 is your estimated BMR. With moderate activity your total calorie expenditure came up 3521. But I think you might be able to get a more acurate reading if you enter in some more specific info here (http://www.exrx.net/Calculators/CalRequire.html). There are instructions below the calculator.

Either way though, I would say you need a lot more calories...especially if you're planning on adding more activity.