Feel weird

17 weeks 3 days and my left boob in particular is starting to feel a bit heavier than my right (I just weaned our 15 month old and she always nursed from the right never left) my stomach had felt really itchy lately and I dont wanna scratch 😭😭😭😭 7th pregnancy but 5th successful pregnancy. 4 children 3 girls and 1 boy and our son will be considered the middle child so we are hoping for another boy lol. Anyone else feeling itchy everywhere like the boob, side and belly? Its driving me nuts