Yes, you can use Ivomec safely during pregnancy. Most folks here use the 1% injectable, but give it ORALLY instead of injecting it.. Draw it up out of the vial with a syringe and needle, remove the needle, and squirt the med down her throat. Sounds weird, I know, but it works. The dosage I use is 1ml/25lbs.
I'd suggest also hitting this one with fenbendazole orally at 10mg/lb (1ml per 10lbs with Safe-Guard 10% oral suspension, for instance) for three straight days, just in case she's also carrying a tapeworm load.
In fact, if her lower inner eyelids are white (not pink), I'd probably do the Safe-Guard first, followed directly by the Ivomec.. And then I'd probably follow all that up with oral Cydectin in maybe two weeks, but that's just me..
Parasites aren't likely to be this one's only problem, though.. I've seen parasites cause their coats to be rough and dull, and to make the goat anemic and depressed and perhaps harder to put weight on, but my experience so far hasn't caused me to think "WORMS!" right off the bat when I see a skinny goat.....more like, "FOOD!"
Might also consider having her tested for Johne's disease, since she's new and in very poor condition..
How is she being managed since she came to you? Can she graze?..browse?..are you offering free choice hay, and what kind of hay is it?...are you supplementing with bagged feed, and what kind are you using?..are you offering a loose mineral blend, free choice?
I'm just thinking maybe we can evaluate the situation and help you put some condition on her.
