I have one outlet in my bathroom and would like to add another.can I somehow use the existing outlet and connect off it?
you could always put a double outlet box in that is what I have done many times
Here's a how to! https://www.constructionprotips.com/jobsite-tips/installing-an-electrical-outlet-anywhere/
The big problem with adding a new outlet in an already finished space is having to tear off the drywall to be able to run the wire from outlet to another. Just make sure you get big enough wire (to be safe I'd just use 12-2).
What is your current outlet and how many amps is the circuit? Before you go haphazardly adding another outlet and using the existing one to power it, make sure you are working within code requirements. And, do you really need more than two sockets in a bathroom? What do you have plugged in that you can't unplug when you need an available socket? Remember, if you add a receptacle upstream of a GFCI it will not be protected, so try and make it downstream if you can. Here is the current NEC code for bathroom electric supply:
Hey Seth....can you come and do some electrical work for me? ... I guess I am the conservative one here. I believe in leaving electrical work to the electricians. It is too easy to burn a place down by screwing up connections....JMHO.
Ha ha. I'm only willing to burn my house down, not yous too. :-) But I agree with you in that electric work is the most dangerous and easiest to screw up if you are not 100% confident in what you are doing.
Unless you're a Professional Electresion, I wouldn't Recommend it, is it worth Burning your house down if something doesn't go right! Just plug in a power strip and hang it on the wall beside the outlet, it's Cheaper,Easyer & Safer than anything else. Think about it!