Lots of changes during 4th pregnancy

early 4 weeks: bloated and easily full even i ate abit.. 8-10weeks: tired than usual, hate the smell of fish or taste of it, dry skin and flaky at times. 16 weeks : itchy belly, itchy underarm and became darken and it hsppen inner thigh too .....previous pregnancy no such experience for skin darkening or dryness.. mummies any tips beside rub lotion ?