Theres no visible growth but in the middle of my wrist its like i can't bend my hand fully back because something's there, been weeks, ganglion cyst ?

Ganglion cyst is : One explanation for this feeling, at times again when can be hidden and not be obvious, the extra fluid in the sack makes the wrist feel stiffer and can be painful. Sometimes if you flex extend your wrist all the way it becomes more obvious finally rapidly moving your wrist up-and-down sometimes makes the ganglion inflate a bit and be more obvious. Ganglions are not harmful but local irritation.

Wrist issues-? Lump: Did you fall or were you in an accident and injured the hand recently. Ganglions are the commonest tumor in the hand and may present or become visible later. Patients may have symptoms similar to what you describe. Some smaller lesions can be diagnosed by scans. See a hand surgeon for an evaluation.