So I am 6 weeks pregnant and my husband and I had sex a couple nights ago. It was uncomfortable for me (I think he hit my cervix) so we stopped and haven't had sex since. But since then I've had very light spotting. Light pink, and on the toilet paper maybe twice a day. But I just went to the bathroom and when I wiped there was the light pink but also a TINY speck of red. I talking like the size of a tiny piece of hair... Should I be concerned?