Hi Joseph, As a BA Manager I am often asked for advise from people in the same sort of situation as you. I would give two suggestions:
1. First of all, you haven't said if you DONT enjoy your current role. Lets assume for a second that you do like it, but the only thing that goes against it is the fact that you are working around the clock. I get that, so I would ask your line manager if they would consider hiring some support for you. You may find that someone else in your company wants to do your job, so it may a 'Win Win' situation!
2. Lets assume the first doesn't come about. Is there someone in your company who is actually a BA? If there is, ask if its OK for you to shadow them for a few days. That way you can see what a BA really does do day to day.
Don't rely on the picture sold in books and teaching materials. BAs, as with many other roles, often do additional work. Some act a Project managers, Product Managers or other roles in addition to their BA duties.
Understanding what a BA is and does is a part of the process in getting a role, but it isn't the only thing. Most companies want experience these days, so see how many jobs you can find on job boards etc that DONT ask for x years experience.
I am based in the UK, but I always look at people with passion and willingness to learn before any certificates they have. As a BA, you are always learning new things. So show me a passion to learn all the time and share that knowledge with other team members. I would always rather someone showed me those attributes, than someone else who has a host of certificates.