Please help! Positive Tests but now bleeding!

I'm only 4 and a half weeks pregnant. My last real menstrual cycle was 08/29. I Tested 09/25 with a hpt and it was positive. Tested again 09/26 in the morning and it was positive again. Had a blood test done yesterday, 09/28 and that came back positive as well. BUT yesterday I was experiencing very light spotting nothing more than some brown "discharge" only a spot on my underwear, and mostly on my tissue paper when wiping myself. Then today 09/29,  it went pink and now  it's night time and it's red, similar to the beginning of my period (which was supposed to start 09/24). Still no substantial clots (only had a small one, the size of the tip of my finger). I'm scared and I can't really ask anyone around me because I haven't told anyone I'm pregnant yet (or was??) please help let me know what I should do if anything :( I haven't been able to set up my first appointment with my OBGYN yet, should I still set one up? 

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