Red Spotting. Waiting at E.R.

Paula • Mommy & Daddy to one little sweetheart. Another on the way!
Called my doctor this morning after waking up to brown spotting. Have an apt in the morning. This evening it turned into bright red still no cramping. The on call doctor said to go to the E.R. but I called hoping they would tell me it's not urgent and to wait for my apt. But they said to go and that freaked me out because it sounds so serious. Am I losing the baby? Or were they just in a hurry to tell me to come in? Trying not to freak out.