Had a terrible scare last night!

I am about 11weeks 4days pregnant. Yesterday I got into an heated argument with my older two kid's father. I went to the bathroom an hour after I got off phone with him and noticed I was spotting with the brown blood like at the end of  periods. I messaged my soon to be husband while he was at work and told him he told me to calm down and try to rest. He came home 5hours later we had dinner. I went to bathroom and the blood was a pink color. I ran to our room and started to cry he told me we should tell his gma to get her opinion on what to do. She asked if this ever happened with my other kids I said no she goes we are taking you to Er!