Really need someone’s help. 😭

Okay ladies so my LMP was Aug 17-21st. I ovulated and had a positive LH strip on September 12th. On Saturday September 29th I had some mild cramping followed by a TINY bit of spotting at night. The next day it was again just a tiny bit. On Monday I had no cramps or spotting until I went to use the restroom and when I peed a big blood clot fell in the water. I have yet to start my period and I’m kinda worried something may be wrong with my body. Has anyone had this happen to them or know what it could be?