Thanks for your help and here's an update...
It finally dawned on me to look up the actual product's website! Duh! Don't know why I didn't think of this before.
The fenugreek/ thyme combo is meant mainly for chest congestion, reducing mucus, and as a laxative (yikes).
I also stopped by a natural food/ herb store and talked with a lady there, she says she doesn't recommend taking the fenugreek/ thyme when breastfeeding but recommended I keep it as she highly recommends it for congestion.
I guess I'll keep it, but I'm still peeved at the grovery store for displaying it right next to the blessed thistle, kinda misleading if you ask me. I may say something to them the next time I am there (though I usually don't do things like that).