question for all of you... i woke up this morning with abdominal pain and i was looking in the…

question for all of you... i woke up this morning with abdominal pain and i was looking in the mirror and was inspecting my belly and found a pretty big bruise on my side. I've called my doctor office and left a message asking if i should go to the er and i havent heard back.... i didnt fall or hit my side on anything. it seems so weird. i have been worried all day. i have an appointment on friday but the pain hasnt really stopped at all today? should i just go to the er?