Let me know what you think please

Jennifer
I am 10 weeks yesterday evening I went to the bathroom and there was blood when I wiped. 
It looked like I started my period. 
Of course it scared me and I assumed the worse tried to prepare myself for the night but it never happened....
it slowed down from bright red to pink and about 530 this morning it started to change to brown which is how it is now 
No pain cramping or anything 
Should I be worried? 
Nurse said it could be yeast infection or even popped blood vessels?