Testing out trigger and faint positive?

Help! I took a trigger shot 10 days ago and had been loosely testing it out (only testing every 2-3 days). I decided on day 8 I would start testing daily so I knew for sure when it was out, the last test I took was 2 days prior. Lo and behold I had a stark white negative on 8 days post trigger. I was extremely surprised because that would’ve been the fastest I’ve ever tested out and I figured I had at least 2-4 more days. Anyway, I then took a test the next moring, 9 days past trigger, and 8DPO, and I had a vvvfl. So I tested again that afternoon and I had another vvvvfl, this one being ever so slightly darker, but still extremely light. Now I just took a test this morning and there’s still a vvvvvfl but now it’s lighter than either test I took yesterday. I’m not really sure what to think. The test I took yesterday afternoon was on a 7 hour hold with almost no liquid intake, the test this morning was from an 8 hour hold but I chugged a bottle of water before bed. It’s making me question everything. Is this a real positive? Is it a chemical? Is it still just my trigger? Anyone been through this and can give me advice? I’m going to continue testing because I know that’s the only way for sure to know what’s happening. Thanks!