I was fired from my job at a Spa with no reason given, after I told them I was pregnant. My employer told me because I had worked for her for less then 4 months this was perfectly legal. I know this is against my Human Rights but how do I go about fighting this.

Thank you for your question. The short answer is that your employer is incorrect. You cannot terminate someone without providing them any pay or notice under the common law unless you were employed for less than three months and you have an enforceable contract of employment that states that you can be terminated without any pay or notice if terminated within those three months. How much you are entitled to will depend on a number of factors including your position, age, etc., and so I would recommend that you speak to a lawyer regarding the best strategy forward.