Losing a chunk of weight has caused my periods to return which is lovely of course, but today is weigh in/injection day and I've gained 7lbs! Is this normal? I am on day 3 of a horrendously heavy (and painful) period, have eaten very little the last few days but have been having plenty of water. Really having to fight the urge to step on the scales every 5 minutes to keep checking it which I know is silly but I'm feeling really gutted.