jobs and pregnancy

Lacey
In February I got hired on full time at this company (I came from a temp agency, been with the company since October 2016) and I found out I was pregnant a few weeks after that I have yet to tell them I am and they are already talking about a promotion I'm still doing my job like I normally would but I'm afraid once I tell them they will find everything and anything to get rid of me...it's sad I think like this but it's come to that I was going to tell them after my ultrasound next Wednesday but don't want to be pushed out the door?? Opinions??