Faint positive 7 & half weeks after abortion

Can anyone help my as to why I've still got a faint line my last bleed was on 20th may which was a weird one only had brown spotting really light then a rusty colour then it went I've been testing and it was all most gone now it's back faint ..I had last bd on the 10th June and I think he came in me a little he said could this be showing a new pregnancy ??? The bottom test is a ovulation and top is Hcg ...