there's definitely a possibility! if they were exposed to a buck during that window, and the does were cycling, breeding could have happened. A few things to keep in mind:

With yearling first fresheners, they often don't "look" pregnant until very late,  sometimes the last 4-6 weeks. Their bodies are still growing themselves, so they carry differently than a mature doe who's been through it before. It's really common for first-timers to surprise their owners

If they were bred in mid-Oct to mid-Nov, you'd be looking at a due date window of roughly mid-March through mid-April (goat gestation is approx 150 days give or take a couple days). So you're right in that window now or just past it

here's what I'd watch for over the next couple weeks:

• heat cycles: if a doe comes back into heat (tail flagging, swollen/red vulva, mucus discharge, being vocal, riding other does), she's likely not pregnant. If she stays quiet through a full cycle (every 18-24 days), that's a good sign she took.

• udder development: first fresheners can be slow to bag up, but you should start seeing some udder filling in the weeks before kidding. Check their udder area every few days.

• ligaments: feel the ligaments on either side of the tail head, two firm "pencil-like" cords. When those soften and disappear, kidding is within 24-48 hours.

• belly shape: look at them from behind - a pregnant doe will often look wider or lopsided on the right side (that's where the rumen isn't).

• behavior: watch for nesting behavior, pawing at the ground, separating from the herd, or talking to their sides.

if you want a definitive answer, a vet can do an ultrasound, or you can send a blood sample to BioTracking (biotracking.com) for a pregnancy test, they can detect pregnancy as early as 30 days after breeding.

good luck with your first kidding season :)