Filling a pad is NOT spotting. Go to the ER. :(
If you have heavy bleeading def. Go to the e.r. spoting is normal during pregnancy since your body is constantly changing
Dark brown is old blood, chances are it's from the implatation, mine didn't happen till I was about 9 weeks, and that's all it was. If it gets worse or turns bright red, definitely go to the er, or you can go there and have them check anyways
I would go to the ER. bleeding isnt a joke
It sounds normal but I would let your doctor know since you have to change pads.