I know it's safe to exercise and it's encouraged but I'm wondering if you are over weight (170lbs 5ft,5) would it be safe to try lose some of that ? I only got my BFP yesterday and I am delighted don't get me wrong but had a negative last week or what I thought was a negative test (may have been the faintest line) and had resolved to try shift some of this weight in the new year as I'll be so over weight by 3rd trimester I don't feel it's healthy going into pregnancy this out of shape. Any thoughts ? I wouldn't be restricting calories or foods I suppose just getting more active and hoping I lose weight or tone up a bit over the next few weeks.