teme, the most important thing is to make sure that your DH's surgeon (and anaesthetist too if you can) knows that he has a red cell antibody. That way they can organise to have blood taken from him and sent to the lab prior to his surgery so that they can match up some blood just in case he needs a tranfusion. I imagine most labs would do the same, but my lab's policy was to have a couple of units of blood in the fridge ready to go for any patients with a red cell antibody having surgery. E negative blood is relatively common, so finding matching blood for him won't be a big problem.

As for you having the antibody, you can't "catch" it from him. The only way you can get an antibody like this is through blood transfusion (which is probably where he got it) or pregnancy/childbirth. So by all means get your blood checked if you are worried, as there is a tiny chance you could have an antibody from your ectopic, but more than likely they'll find nothing And it is routine to screen pg women for red cell antibodies early in the pregnancy anyway, so even if you don't have it done now, it will be done when you are pg again.

I hope your DH's surgery goes well It must be very stressful for you