It's certainly okay to take it out and put it in. It's just that you'd be surprised how many seemingly innocent posts like yours eventually end up finding out that the OP did more than just remove and re-install. Some leave off the fact they re-built the hub and lost a few bearings in the process. So many of us are suspicious. <grin>
Not familiar with your bike, but check to see if there are thin lock nuts on the axle that might have gotten loose and the bearings are now out of adjustment. Still depending on what your hub model is, the fix might be slightly different.
Pics always help. Particularly if someone can recognize and is familiar with all the pieces parts involved for that particular bike.