★Bloodflowers★ ❤ 2 kids; Moving., IL, United States 2614 posts29th Nov '12
BunnyGirl19 3 kids; 10 angel babies; Oregon 15961 posts29th Nov '12
I've never had an IUI, but that is very common and it's primarily from cervical and vaginal irritation. It should turn brown and go away completely within a few days at most. Although certain progesterone supplements can also cause a bit of spotting (don't know if you will be doing those).