Anxiety

At DH's request, I went to see our family doc on Thurs night to talk about what's going on. Her first comment was that it could well be related to stopping/cutting back on pumping, though unlikely is related to the domperidone stopping. Then she asked if I didn't think that underneath it all I might have a bit of an anxiety problem.
Hmm.
That would explain the irritable bowel symptoms I've been having (diarrhea, belching, feeling constantly wound up in my stomach, no appetite). And why I just feel on edge all the time the last week or so. And the insomnia. And maybe why going out of town and having a change of scenery last weekend helped.
Really, I know logically that there's nothing I need to worry about right now. That the house is ok, that if for some reason I weren't able to work, we'd be ok on DH's salary. That DD is wonderful and thriving. We're ok for money, we're happy together, I enjoy my job. What more could a girl want?
And yet I lie there in bed at night, awake, thinking about how I'll feel the next day if I can't sleep, worrying that I might not look after my patients ideally (when really, I did just fine on broken sleep for months while pumping twice in the middle of the night). And worrying about how I won't be able to keep up my energy levels on the amount I've been eating lately. Nothing appeals to me, and I have to force the food down. Tonight I resorted to drinking a slimfast meal replacement before trying to go to sleep, just to get some protein and more calories into me.
I know that a few days of eating less won't really hurt me, and that if I can get through this anxious time and feel better, my appetite will return again. And yet somehow knowing that doesn't really help.
I've asked to take the week after next off of work (though I'm on call on the weekend) so that I can try to relax and sleep on my own without pills, and try to cope a little better.
I don't know why this is coming to a head now. I just know that it feels awful, and like I don't have a lot of control over the situation.
My family doc told me the name of a book she wants me to read, which I'm going to go out and get tomorrow. Hopefully it will provide some insight. She also said she waits for symptoms to go on 6 months or so before prescribing meds. For now, she gave me a refill of my sleeping pills, since that's what I feel like I really need to keep me going. I don't want to get dependent on them either though.
Life is just kicking my butt a little right now. I never though of myself as having a mental illness, but I can certainly see why she says I've got a bit of an anxiety disorder. I hope it gets better very soon!