Feeling anxious :(

I just found out I am pregnant, app tells me 4w 4d, and This morning I woke up feeling extremely anxious. All day I've had this feeling like something terrible is going to happen.
I already suffer with depression & anxiety which I can't take my meds for cuz of my pregnancy. The anxiety I'm feeling is different to what I usually feel. Definitely less. 
Is it normal to feel so worried & anxious?