Toddlers and pregnant!!

Carolina
So I'm 9 weeks pregnant with our second baby !!! And our son is about to be two, sometimes throws him self in the bed and as much as I try to say no and correct him he keeps doing it I don't know if is the age or what the point is that I'm am worried that one of those times he does that he could hurt the unborn baby or me ? Any advice? I really need help