Bleeding during pregnancy?

Got my BFP Saturday and started having period-like bleeding Sunday with some clotting but without cramps. I took like 11 tests all different brands and two of them were digital and taken the day I began bleeding. 
​Has anyone else experienced this before? I'm so nervous to know if everything is going to be okay. This is my first pregnancy so it's all a little new. 
​Waiting on blood results at the doctors as well. 
​And input would be appreciated!