Super excited but concern creeps in...

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I finally got my bfp yesterday at 12 dpo! I've had spotting for well over a week, which I understand can be normal. My concern is that yesterday I noticed some red blood when I used the bathroom. It only happened twice and it wasn't enough to need a tanpon or anything but definitely noticeable. Today has been only brown spotting. Has anyone experienced this and still had a healthy pregnancy? My biggest scare is that I could be miscarrying. Until I go for a second blood test tomorrow my mind is wandering. I'm super scared and nervous because I want this so bad! Any one who can relate or offer some peace of mind, anything, would be appreciated! Thanks