Faint line. Help!!

Ella

Last week my home urine pregnancy test is double line but not very dark. Had blood test and my hcg lavel is 80. Today i took another home urine pregnancy test but its very faint line. Im very scared right now. I had spotting with brown colour since last week but today my spotting is light pink and i dont have any bleeding or clots. Can someone help me to explain what is happening??