help please!!!

last month I started early but my cycle was a normal flow this month I started early and it was only there when I wiped and I could get by with just a panty liner but it lasted 4 days never been pregnant before so don't know what to expect I do feel tired all the time and my appetite has picked up some mild cramping and from time to time I feel nauseous and a week ago I had some sharp throbbing feeling in my breast please let me know what y'all think