Noticed some brown blood

Rebekah • Mommy of 2 amazing kids with 2 more on the way! Joseph`s wife! ✨
Went to the doctors & i was supposed to be measuring 9 weeks but I'm still measuring 8 weeks... BUT we did see 2 heartbeats still, doctor couldn't pick it up to measure it but there was definitely 2 flickers. Should I be worried about miscarriage? Please help me, I'm stressing out!