PMT is over

Well my PMT went with the start of period today, but it has zapped my energy. I'm ready to go to bed now and its only 7.30. I am trying to build up my blood sugar by eating snacks and having wholemeal foods, but its a long slow process. I have found that peanuts make me feel full, but I do wonder if the caffine in them is high enough to affect my blood sugar.