march 20 LMP,I had contact on 26 after a week i had all the symptoms of being pregnant lightheaded,fatigue,sore tender breast,bloated and heartburn,incraese vaginal mucus.On april 20,i had bleeding i dont know if thats what they called implantation or my regular period because just lasted for 2 days.Until now im still bloated anh heartburn dont go.i had 4 home pregnancy test all negative.On april 24 had also beta hcg also negative.I'm confused i'm definitely not ready or afraid that i could be pregnant.Can these all be just psychological or i can possibly be pregnant?thanks