Spotting??? Or not is this normal?

So af was suppose to come on 8/27 but 8/26 I had light pink bleeding only when I wiped. It lasted for 2 maybe 3 hours. This happened 8/26, 8/27, 8/28, 8/29. It never lasted longer than 2-3 hours. My test are coming back positive but I went to the Er 8/28 which was the day after af was suppose to come and my level was only 25. I haven't had anymore bleeding since and no pain but they can't get me in to test my levels until next week. Just need some advice or someone who has been through anything similar