That's pretty strange, and you are not using any mods, cheats, or anything, like the rollback? So far, that is the only thing I have heard of that has been causing those issues other than using the old saves maybe.Even if you have multiple saves, loading any of them still brings you back to the barn.
That said, I haven't gotten to the pills yet, my first try got stuck at the 3P right after I got her pregnant, before we were aware of it yet.