Help!

Crystal
I had spotting this morning. I'm hoping for IB since I did my 1st <a href="https://glowing.com/glow-fertility-program">IUI</a> on the 11th of this month. I log my temps in fertility friend as well as glow. My question is if I implanted today at 8dpo how soon could I possibly get a bfp? Also would my temp drop before IB or during?