Trigger shot or BFP?!

Mi

This is my second IUI and I'm 9/10 dpo and 11 dpt. I have been testing out ovitrele trigger shot since 4dpo and second line doesn't fade and it doesn't get darker. But I think the line I got on 9dpo is a bit darker than 8dpo. Am I crazy or is this maybe my first BFP?