PLEASE Advice!!!!!

Nicole
Hi,
I'm in the 2ww 
- ttc 
- 10dpo.. Saw this few mins ago. 
My af is irregular. Had baby dancing couple times during the ovulation day (opk). 
Is this a symptom ????
I have never ever seen this on my inner wear like this before. 
Please help.... The wait is killing me!!!! 
Thanks.