Help!

Dani

So I've been testing the past couple of days. My period is supposed to arrive in 4 days. But I've been having symptoms. This would be my second child. I took tests. Negative. Negative. Negative. Then bam. A very very very faint line appears. Hubby sees it. I see it. Mom sees it. Then I test this morning and it looks like the line was trying to appear but then vanishes. It was there for a quick second or two. What do you make of this? I'm so confused! I'm testing again in a few days. I would post a picture but the quality of them are so low. 😭😭😭😭