So confused?

I need help don't know what to think. As of today I am on cd 50. I took 3 pregnancy test with 2 having vvfl and one negative. I have had so many symptoms such as my boobs feeling heavy, very sore nipples, nauseous and sometimes vomitting. I have been going to the bathroom more often and have been just crying out of nowhere. Last night thought AF was coming. As of this morning still nothing only see light pink when I wipe after peeing. Slight cramping for a couple of weeks and today. Not even needing a pad. Any advice is welcomed and needed.