Is it too early for symptoms

I am 6 dpo. My bf and I had sex three times on the day I ovulated. 4 dpo I fainted at work and had a slight cramping in my abdomen. On 5 dpo I had an intense cramping feeling for a little less than a hour. I have been craving foods I normally am picky about. I've been unusually exhausted (sleeping after coming home from work) My period is due in a week but I'm curious if anyone else has experienced symptoms so early.