hi im 6 weeks and have terable heart burn for the past 2 weeks, im finding myself getting up at night 2 or 3 times and drinking a glass of milk to sooth it. i have also in the last week been very thirsty is this normal? i only drink water or juice (milk for heart burn) some one said signs of twins!?!?!?!?!?!?! this has me slightly worried as i have two children already lol