A few thoughts:
- What do your clothes say, is the fit changing in them? That is a far more accurate guide to gaining/losing fat than is the scale.
- Genetics aren’t everything in weight, but they do play a role. If women in your family tend to be big you might find it pretty difficult to stay at the size that you’d prefer (after all, most fat folk out there would rather be thin, and they many of them did not become fat through anything all that odd in lifestyle)
- If I recall correctly, you are in your very early 20s? It is an age when a lot of people end up gaining weight, as the bullet-proof adolescent metabolism begins to slow down.
I’m not trying to say that you are doomed to get bigger, just that to stop gaining, or even more so to lose, might require unpleasant changes to your lifestyle. It is one of the lousy things about getting older (yes, even as young as you are, you start getting ‘getting older’ stuff), you really are running on the Red Queen’s racetrack, body-wise.