Nellie.

When I was PG I suffered pretty bad stress too - work, home, family, volunteer work stuff, uni... Someone on BB sent me some relaxation CDs which really helped - especially when I put them on just before bed. I would be happy to send you a copy (email me at natashadATinternodeDOTonDOTnet if you would like them).

Some other good ways to alleviate and control stress are;
guided imagery
massage
regular gentle exercise (a 30 min walk 3 or 4 times a week)
keeping a journal or diary
talking it out with someone
deep breathing exercises
and here's one my midwife told me.... floating in a pool. I didn't fancy my chances of a peaceful float at my local pool so never tried it...

Defiantely have a chat to your Ob about it if it is a concern to you.

HTH and good luck with the job interview!

MG