Please help! I don’t understand:(

So on 9dpo I tested with FMU, the test said to read within 5 mins but I didn’t get a line until 15 mins later and it was pink too. On 10 and 11dpo I tested negative. But I have been having cramps and backaches since 7dpo. Today 11dpo I felt really dizzy could barely focus or walk, which is not usual for me. Do you think the line was evap/false positive and I could still be pregnant or do you think that was chemical pregnancy? Please share your opinion/story😞

That’s the test from 9dpo after the time limit