11 weeks 5 days - small pink streak in discharge when wiping... Help

Jg • Pregnant with TWINS after mc in April 2015 -looking forward to this journey - trying my best not to be anxious
Hi everyone,
I just went to the bathroom this morning after gagging and wretching for awhile (didn't actually puke) and when wiping there was the tiniest amount of pinkish orange streak in it. I was just at my OB yesterday had an ultrasound and everything looked great and she had no concerns - I am having twins and am at a high risk OB clinic so I would think if they saw something on my ultrasound they would be the ones to detect it. Has anyone had this before? I do have some pains on my belly at the sides but have had this on and off pretty sure it's normal stretching pains. Any advise or help or experiences are very much appreciated.