Hi, I'm really struggling with a persistent nervous feeling in my tummy, even though I'm not nervous about anything! It was the first day of school today (I'm a supply teacher) but I wasn't feeling nervous, until just before I did the register I had a wave of anxiety- which passed. But for the rest of the day I've felt really nervous/edgy even though mentally I feel fine. Do you think the adrenaline released in the morning would have caused the lingering nervousness?