Went to the store today

To do some much needed grocery shopping. I was handing my husband a bag of potatoes and I felt like I way peeing myself. I rushed to the bathroom and I started bleeding like I was having a period. I am 9w3d. I immediately came home and layed down for a few hours. I had a couple clots that came out but  the bleeding has now completely stopped. I am very worried. Has anyone else gone through this and been totally fine? I have my first ultrasound tomorrow.  I have also been sick this past week with diarrhea. I am not sure if that means anything either.