Weightlifting and Pregnacy

Bethany
I've heard so many conflicting reports on weightlifting while pregnant. I am a powerlifter and Highland Thrower(yes, the big logs) and I am six weeks pregnant. My trainer said we will work at what I am able to do and he has worked with other pregnant women before. 
I'm also supposed to compete in a Scottish festival this weekend and am still planning on competing just going to keep as cool as possible. 
I'm just a little nervous. Any thoughts?