Possibly my rainbow baby?!

Cassandra
Had a trigger shot on July 29th. I know it takes time to get out of system. But I have been feeling symptoms and have had heartburn everyday. ( never have heartburn) so I took a test 7 dpo and vvvvvvvfl after time limit. (8 mins) So it's a negative and tested WAY too early. Today, 9 dpo a line showed within time limit. The trigger shot would be out of my system right if the line is getting darker? Been trying for 2 years with 2 losses; one being very 18.5 weeks. What do you guys think? 1st is 9 dpo and second is 7.