I give Ivomec plus injectable to my goats. It covers most things other wormers do not. Since you're not sure exactly what worms you're up against, you need a really effective wormer. I had a bout of barber pole worms wipe out my entire kid crop one year...back when I used to not know what I know now. Safe Guard is not effective, you might as well worm them with water rather than that stuff. In my experience, you don't want to worm a goat just because another goat appears to be wormy. Check their eyes. If one is anemic and the other goat had dark red eyelids, don't worm the one with the dark red eyelids. The last thing you want is worms on your farm that are resistant to your effective wormers. Constantly worming goats just for prevention sake causes worms that are resistant to your medications. (Especially with the barber pole worms, they are killers!)
The black oil sunflower seeds added to her grain is good. Also there is something called
Manna Pro conditioning feed that really helps get the weight on. I also sneak a few alfalfa pellets in there, but don't over-do it with the alfalfa if she's preggo. I would just do a little handful in her feed. And the
manna pro will need to be snuck in a handful at a time, or sweetened with molasses and molasses is good at this point cause its got iron that she needs and its yummy

Also If she looks real bad enemic to you, you could try dosing with Red Cell and Vit-B. this should help get her red blood cell count up. Also, you might want to use a grain that is medicated, this helps cover coccidiosis. (I think that's the one) anyway...it's added protection against the worms. But do the research to see what's safe AND effective for pregnant does. Sometimes I've had to risk the pregnancy by giving the right dose of not very safe for the kid wormer, to save the doe who was terribly enemic. Both kids and doe turned out great in the end. Go with your gut and do research!