Hello and thank you for the opportunity to assist you. My name is ***** ***** I will do my very best to answer your legal questions.
I'm really sorry to hear about your troubles with work. However, I'm also sorry that based upon what you wrote, you would not have a viable case against your former employer for emotional distress.
In order to win a lawsuit for emotional distress, you would have to prove that (1) you suffered severe emotional distress accompanied by physical symptoms, and (2) the defendant's conduct was extreme and outrageous, such that it was heinous and utterly intolerable in a civilized society. Unfortunately, what you wrote would not fit the definition of (2). Accordingly, based upon what you wrote, I do not believe that you would win a lawsuit against your former employer for emotional distress.
However, if you believe that you were targeted by your former employer due to your pregnancy, then you may have a viable case for discrimination. You should file a charge with the equal employment opportunity commission. If they investigate and find that there was discrimination, then they will try to work out a settlement with your former employer. If they cannot work out such a settlement, then you can ask for a right to sue letter and sue the former employer.
You can read about filing a charge at this website: http://www.eeoc.gov/employees/charge.cfm
Does that answer your question? Please let me know if you need clarification, as I am happy to continue helping you until you are satisfied.