It's really hard to say what could be causing it. Yes, going off the pill can cause hair loss because of the sudden drop in the hormone levels. Much the same thing happens after a woman has a baby. However, your current pill could actually be causing the hair loss as well. Are you still taking the same brand or did you switch to another when you started taking it again? If it doesn't stop (or at least slow down) after a month, I would go off it. Don't 'wait it out'. Trust me, hair loss from a pill doesn't get any better, it gets worse. I lost at least a quarter of my once very thick hair on the pill, Estrostep FE. After a few months of being off it, you can try again, when your body is regulated again. Look for a pill with a low androgen level. Androgens are male hormones that can cause hair loss in some people.