I'm curious about self-stimulation

Heyyyyy I have a couple of questions let's get to it .. So!! It all started when I was 12 years old my freiend asked if I watched porn I was like what's that?? And bam he told me what it was so that night I watched it and I didn't no what masturbation was at the time so I was thinking do they just watch this for no reason after a month of watching it about every other day I started looking on porn for vine and that's when I saw a vid of some guys ejaculating and as curious as I am I tried doing while watching porn and well i -cumed- for the first time and I loved it and remember I was 12 so that I did it about once a week then I stated thinking is this bad for my health I have been doing about once every other day AND BEFORE I NEW IT I WAS 13 got me thinking I have been doing this for a year shud I stop???? And it got to the point where I'm doing it everyday some days even 2 times a day and also I'm Christian SOOOOOO is that against my religion I don't no cuz I usually don't pay attention at sundae school soo over all my questions are is it bad to mastubate at 13 years old every day some times even twice!!!!!???? And does it say not to anywhere in the bible or 10 commandments or something ???!!! Plzz reply thx for taking the time to read this!!!!