Discrimination?

So I recently found out I'm pregnant and for obvious reasons I told my job I can't do any heavy lifting and so far instead of being helpful about it they have called me lazy brought my personal life into it and still expect me to do it when both people have been mothers themselves and should know and understand. I'm just overall annoyed by the situation, is there anything I can do?

Update: My field leader got involved, two of my coworkers one a manager got in trouble for their sexual comments as well as calling me names and purposely hitting me with a door instead of saying "excuse me". My gm also got involved and talked to me about getting a doctor's note which I said I'm working on getting but I have a lot of personal issues going on, lack of insurance is one of them