TMI - bloody mucus?!?

I keep having bloody streaked mucusy discharge. This one barley has any blood in it but you can still tell. I saw my OB two days ago and after me mentioning it, she sent me to L&D to monitor the heartbeat and the Braxton Hicks which I been having frequently. L&D sent me home and told me not to worry. I don’t think there is anything wrong with the baby honestly but seeing this every time I use the bathroom, freaks me out! Anyone else dealing with this or know what may causes this? I’m 30 weeks.