Is this the beginning of a miscarriage??

Hi guys,

I’ve been experiencing brown discharge for almost a week now.. I’m 9 weeks tomorrow. The discharge began about 2 days after my 8 week ultrasound. The ultrasound went well and heard a heartbeat. The below picture is graphic and probably the worst I’ve experienced over the past few days and happened right after walking all day. I spoke with my doctor today who advised to monitor for any actual blood.. until then we can only hope for the best. Any insight/experience with this would help.