Pregnant??

Last month I was anxious to take a pregnancy test (like I am every month after our miscarriage Dec 1,2018). I wasn’t expecting my period until a Sunday but decided to take a PT on Friday night. I thought it said negative but some reason I saved it and took another one that next morning and I realized both had the faintest double line. I showed my husband and he said there was absolutely 2 lines. Then Monday afternoon I got my period for 2 days. Any thoughts?? I’m currently 8 DPO, period expected in 7 days. I took a first response PT this morning, negative 😞