TMI / bleeding in 3rd trimester

Ca
29 weeks pregnant . 
Been rather uncomfortable the last number of days , just pressure and pain (figuring it's Braxton hicks ) etc . Gets worse the more active I get . Today I woke up with a pretty sharp pain , followed by the urge to go to the bathroom and I noticed then there was bright red blood . Nothing light but definitely not an overwhelming amount. Somewhere in between.  I've put a call into my on call OB emergency line, I'm just waiting to hear back from them. I didn't know if anyone had any thoughts 💭 I'm biting nails while waiting 😒