[uxcolumbo]

You should be earning double.

Do your research and you will see what the going rate is in your location.

You are in a good position to get that pay rise, because your current employer would have to backfill and pay market rates anyway.

In terms of your notice period - if you don't like working there anymore, quit now and then look for jobs after month 1 or 2, so that would give mean your new employer would have to wait only a month.

Or consider contracting.