spitting up blood

Yasmin
okay so this morning while I was brushing my teeth, I spit up some blood. Not a lot but a decent bit to kinda scare me. I googled it & read that this can be normal but the answers weren't very detailed so now I'm on my trusty glow <a href="https://play.google.com/store/apps/details?id=com.glow.android.nurture">nurture</a> app lol. Does anybody have some knowledge on this? Should I be worried about the baby or myself? I'm 20 weeks pregnant btw.