Spotting and nothing seen during u/s

Sasha

Yesterday morning I woke up to some light pink spotting after I went to the bathroom. Given I’ve had two previous miscarriages I panicked. I called my dr office and they got me in. Going off of my last period I should be 6wk today. The dr did a trans vaginal u/s and nothing was showing up on it. She said she sees this all the time and I could just be earlier than I thought. She didn’t really address the spotting then spent me to get blood work done. I got the results back for that and my hcg level is only at 189 and I go back in tomorrow to retest. Has anyone else experienced this and gone on the have a healthy pregnancy and baby? Thanks!