Scared I'm having an MC!

So last night I started to spot a little bit with some mild cramping. I tried to relax and get some sleep through the night. However, I woke this morning to continued cramps (ranging from mild to moderate) and spotting still! (Ranging from a brownish color to pink to bright red) I am very afraid I am miscarrying... I am 5 weeks today. Does anyone have experience with this?? Also, my boobs do not seem to hurt like they did before...