Congratulations!!
And as Steve says, you stay right away, you don't even handle the clothes of anyone who has been lambing. If your OH is doing the lambing, he wears latex gloves whenever he so much as looks at the sheep, and he scrubs his hands to within an inch of their lives before he touches anything else in the house much less comes near you. Ditto anyone else helping with the lambing - use gloves, if you can stop them coming in the house at all so much the better but if they do, they do not touch anything in the house until they have thoroughly cleaned up.
Also, lambing staff - including OH - should use waterproof trousers, boiler suits, etc so that the clothes they are wearing if / when they come into the house haven't been in direct contact with any lambing fluids or newborn lambs.
But the doc should tell you all that.
Congratulations again !
