I Feel Exhausted All The Time And Very Emotional, And

I feel exhausted all the time and very emotional, and very bloated at times, I pee a bit more than usual and feel thirsty more often. I've taken pregnancy tests as I was 3 weeks late but all neg and I eventually started. I'm on no medication. Another thing I'm not sure if its just in my head but my skin feels itchy all over in random intervals