Having to push your pee out or having to force your pee out is usually a sign of bladder issues especially with your bladder muscles.
Your bladder muscles may not be relaxing properly and also the bladder muscles may not be opening up properly.
If you have to push your pee out something is wrong because when you need to pee the pee should easily come out of your bladder without any issues.
You should see a doctor about the issue and tell the doctor you have to push or force your pee out.
Yes it can be bad to push your pee out.
When you need to pee and you have a healthy bladder that is working properly you should never have to push your pee out.
Your pee should easily come out without needing to force it.
When you need to strain to pee or push your pee out the cause could be caused by problems with the contractile force of your bladder or problems with obstruction of the bladder outlet and urethra.
You should get checked out by a doctor because it's not ever normal to need to push your pee out.
Pee should easily flow from your penis or vagina when you're healthy and have no bladder issues.