Another one?

I had a miscarriage in September, had one normal cycle and yesterday at 11 DPO, I had two faint positives (one in the morning, not FMU and one in the evening, the line is pink on both of them). This morning I took a test and it is negative (there might be a super super super light line but it’s probably my eyes). So I got anxious and took another and it’s still negative...Could this be a chemical? I just don’t understand how they were positive yesterday and negative today 😢 I’m so heartbroken right now...

**UPDATE** I took another test (because I’m going crazy) and I swear I see a line (on the Walmart cheapie)...I went to the doc this morning and their test came back negative. They did a blood test as well, I guess I’m just going to have to wait to see 😢