Masturbating and Spotting

When I was 9w 6d, I masturbated and had an orgasm (didn’t used any toy) and half an hour later I had spotting and felt sick. I thought it was just a coincidence since I had too much to eat and walked a lot that day. Went in for an emergency ultrasound that night and the baby was all good and healthy.

Now that I’m 10w 5d I did it again (still no toys or penetration involved) and went to the bathroom 10min after and notice a brown discharge! Now I’m thinking it’s the masturbating that’s causing it.

I’m just wondering if there’s anyone with similar experience? 😐