Hi Khristiaa,
I'm a civil engineer, I had the same amount of points as you, and I got a nomination pretty much 2-weeks after my EOI went in. They run out-of-cyclce from the 189 Visas, so could be anytime. Have you applied for a 189 as well? I applied for both, got the 190 nomination first, but decided to wait and see if I got a 189, which ended up coming the same month. So from the point of applying, I had both a 189 and a 190 invitation within 4--weeks. I opted for the 189 because then you're not restricted to living in any particular state and having to work.
J