So I was supposed to get my period around the 1st or 2nd this month (I'm irregular but my period always starts around that time) and I was spotting brown and light pink for about 5 days and today I wake up and wipe and its bright red. Then, later today it's brown again. I got a negative test yesterday. My question is if I am pregnant would the HCG hormone be strong enough yet to detect? Do I need to get a blood test done? Or should I wait a few days more and test again? I heard it's possible the hcg hormone isnt strong enough yet?