Bleeding at 4-5 weeks?

Samantha
Okay so I am 4-5 weeks pregnant. My first apt is on November 24th. Well Wednesday evening when I wiped I saw bright red blood. Went to patience first and all she did was a urine sample and said blood is common and it's probably implantation bleeding and unless it gets clots or thick not to worry. Well Thursday and Friday when I wiped it was dark brown. This morning it's back to bright red and flowing. Very liquidity but consistant enough to need to wear a pad. Needless to say i am freaking out... I am going to the er just to make sure everything is okay but has anyone else ever had this happen and should I prepare myself for the worst?