Bad Pms symtoms before bfp

I may indeed be queenof premature symtom spotting but i do rememberwhen i was firstpregnantwith my son, well before i got a faint positive(and when i got my dating scans we worked out this occurredeven before implantation) that all i really felt was my general pms symptoms (moodiness, tired, hungry etc) but exaggerated heaps. Well today, 4dpo i am insanely hungry which doesn't sound like much but its even more than how i would get the day before my period. I haven't been to the gym which is my other trigger for bad hunger... However, surely this is too early to be any indication of pregnancy? Am i right?