I would definitely talk to your doctor. I think
for the 1st trimester you will be ok, just really have to watch how much weight u lift at a time and probably shouldn't wear your heavy tool belt. As you progress, depending on if you have any other complications or not, you may have to reduce how much you're up and down a ladder, again how much you lift, etc. And as your belly grows, it will be harder and harder to fit into some of the areas you need to for pulling wire, etc.