Late 4 days

I am now 4 days late on af about 13dpo i test bfn been nausous throughout the day and my boobs will get a weird feeling in them every once in awhile me n my so have been ttc for about 6months now i pee all the time iv been eating more n iv been alittle more emotional to i tested 3 days late on af n another bfn what should i do?