I don't know where else to seek help!!!

I know I need to go to the doctor and am waiting for them to call me back.

I'm not on any form of birth control but do practice safe sex and am active with the same parter for years.

I had a period August 7-12. Which was about a week earlier than it should be. Then this Thursday 8/24 I began cramping very hard. I became weak and light headed. Yesterday 8/28 I had some very weird dark brown/black discharge on and off all day. Then lastnight I started what seemed to be a period- except it was jet black. My next period shouldn't be until 9/5. So basically I had a week and a half break and started this period thing.

This morning since 6am (now 9am) I've changed my feminine product 3 times and bled out. It's a very dark red with black... and non stop. I'm very tired and uncomfortable. Now super worried.

ANY HELP OR ADVICE WOULD BE APPRECIATED WHILE I WAIT TO HEAR FROM MY DOCTOR