Could I be pregnant again after a mc?

Hi all. I had a miscarriage on 24th April then had to have a dnc in the 2nd may for retained products. I had a negative pregnancy test and then a positive opk a week ago. I've not had a positive pregnancy test and I'm confused if it could be a new pregnancy or left over hormone! I have spoke to the early pregnancy unit and they have told me to give it 2 more weeks and if it's still positive they will see me! 2 weeks is going to kill me. It was a first response early response test I took and as u can see it's positive! Xx