9 dpo please help!

Hi ladies. I'm 9dpo, we did IUI this cycle with clomid 5-9 and a trigger shot 10 days ago. I am having some dark brown spotting, af isn't due for another 5-6 days....could this maybe possibly be implantion bleeding?? I've read that its often light pink but interested in your personal experiences! After trying to conceive for 18 months, and on our 2nd IUI, im searching for a miracle. Thank you girls in advance ❤️