Well, the starch from the noodles probably was in the broth...carrots for some are problems...the amount you ate may or may not be. How many carbs a day do you normally eat? If 20, than this may be a problem.

How are you today? In ketosis? Are you hungrier than normal - - this could be a sign you fell out of ketosis and thus the starch could have knocked you out.

Onions have a higher sugar (natural) content and are fairly high in carbs but unless you ate them, I don't think lots of those carbs were in the broth...some...but not most.

Either way...drink lots of water today...flush out your system and you should be "back to normal" within 24-48 hours.