Lavender oil has been my rock through my pregnancy and suffering with anxiety.
you can either rub some on your temples, put a few drops on your pillow at night when you sleep or have a nice relaxing bath with some drops of lavender oil in the tub... lavender oil is an old remedy for calming nerves, anxiety ect.
and remember just breathe,
your have to learn to control your mind cause chances are what you are having anxiety over is not even happening smile hope this helps, i know its tough. hang in there.