Need Help

So my period was supposed to start yesterday and it didn’t. Then this morning I went to go to the bathroom and there was a single drip of blood and a marble sized blob. I’m not sure what it was, it looked almost like tissue color. It had blood on it but it wasn’t a blood clot. I’ve had blood clots before and this looked nothing like them. I’m not quite sure what it was or what it means, can anyone offer some insight?