How do you handle this?

Bearing in mind, I have a stressful job, and right now resigning is not an option.
Busy starting out on Lamictin and am currently on 75mg.
Battling with physical issues too - headaches and sinuses
I've been a lot more stable since starting the Lamictin, and I haven't had a relapse into depression for a serious while (Only one really bad day, but I had a major trigger)
This morning I just woke up with such anxiety - I really did not want to get out of bed and have to tackle the day.
I guess it could well be likened to what "normal" people experience as "The Blues", but I don't like it one iota!