Missed period and itchy feet and hands

Iv had missed periods before, my period always came acupple days later, but I think this is the longest time and no sign of af. And this seems strange but my feet and hands are extremely itchy! Especially my feet! The past few days the top of my feet have been itching and now the bottems.. And my nipples hurt and they are constantly hard. The other day it felt like something was swelling up right below my stomach, not like the normal period bloated feeling but like a full feeling, it felt weird and I felt like if I moved it would explode or something.... Idk of these are pregnancy signs or if my af messing with my head. Has anyone else experienced this?