Black Discharge

Hi everyone,

So I have a Gyno appointment but am stressed of symptoms I’m experiencing and am curious if anyone might know what’s going or has had similar symptoms happen to them?

So I’ve been having thick black/brown discharge that is so heavy i have to use a pad. I am midway between period cycles yet am cramping, mostly on the left side of my abdomen. After inter course, i immediately began to have blood drops when I used the toilet....I’m so stressed, what could this be?

Thanks