I missed your message.
(1) Another way is, if you think the dismissal is unfair, you can instead of complain the Labour Office, you can make a claim under Section 20 of the Industrial Relations Act for reinstatement. You may approach the nearest Industrial Relations Office from your place of work. About compensation you wre talking about, there would not be much if any because of your period of service is so short.
(2) About the question of your pregnancy. If the termination of your service is really on 1st Agust, to qualify from the two months manternity allowance, birth must take place within 4 months from 1st August i.e. 1st December. Only your doctor will be able to tell the actual date you are going to give birth.
Now, knowing where you stand, you can talk to the director for some compensation when he interviews you or gives you the letter. If you are not happy with the outcome, the Industrial Relations Department may be worth a try.