290 to 200 at 50NL.. easily be an unlucky swing..
120 to 300 at 25NL.. Could also be a swing..

You need to play more poker, dont move up just because you have enough money (which you dont). Move up because you are very confident that you are playing well enough and have enough money

the first thing you said was "i've been playing 25NL for awhile now" Not long enough to judge your playing standard. Play more before moving to a higher level.

And i see you joined only a couple of days ago.. welcome to the boards.