Severe anxiety attacks!!

So i am 30+4 and have been getting horrible anxiety attacks. They are so bad that i feel dizzy   and even sometimes barf if i had just finished eating. I have never been anxious before or at least it has never been manifested like that. The worst part is that usually comes before or after a contraction (s). I have an appt. with OB on tuesday but was wondering if anyone else dealing with same thing and what are you doing to help.