I don't think you are BU, well if you are it's totally understandable.
I actually think that if you seek advice, you may actually be reassured in that (hopefully?) you have recovered and not had another seizure. I would ring your GP rather than 111, mine has asked me to ring them directly for anything unless it is CV related, which is 111. Are you under the care of an epilepsy team - mine have a helpline you can ring for things like this.
My consultant/GP would probably advise me if meds need tweaking, to monitor it myself rather than go in if I had recovered but they would also ask about possible triggers and how I could reduce them.
Re this, I totally understand the fear. I was the sole wage earner in my house when I became ill (not just epilepsy, mine is part of a syndrome, adult onset) and I did lose my career eventually (not my decision which made it worse) and we had to make a lot of changes. At the time, I will be honest, it was very very hard indeed not just for me but the guilt I felt about putting all that on my family.
However! A few years later I can see that it was actually the best thing that happened and I should have done it myself before it was forced upon me. The financial implications were big and our lifestyle has changed. But we all actually have far less stress and fear and while my health won't improve, how I deal with it is easier.
Perhaps if you take it more short term though and speak to your GP, see what they advise. If you know yourself you aren't keeping the plates spinning, some time out (off work, obviously you can't have time off from DC) will help you lots and might actually prevent long term implications. If you think of it like that would it be easier?
The only other thing I can think of is that when I actually lost my job, I said to my MD I still felt guilty about all the times I let them down and missed meetings etc, and they said they only remembered the times I did manage to work despite everything. I saw it completely differently then, and to be honest I thought I was a bit of a twat for struggling on as long as I did 
I also thought if I had taken the time I needed rather than struggling on it would have been a lot easier and I might have been able to change things gradually if I needed to. Don't be like me 
It's so easy to say "well nothing matters more than your health, not even finances and houses" but when you're in the thick of it you think "well that's bollocks as I have to feed and house my family". But actually it is true! Perhaps if your GP and you agree you need a break from work (especially under the current circumstances) you will feel you are doing the long term responsible thing to help you (and your employers and family) in the future.
With a break you may actually reduce the guilt you feel at the moment rather than feel more guilt. It might be worth a try?
Sorry this is really long! I really feel for you and hope it gets easier for you soon.