Hi there, light spotting and cramping is normal early pregnancy (I went through the same thing) if the blood is bright red (fresh) that's reason to be concerned but if its darkish brown/light pink thats usually considered normal. I know I was concerned as well, and when I called my Dr I was assured it was normal but if it progressed to bright red to come in. I'm just speaking from my own experience (2 years ago) but to ease your mind, you could go to the ER to be safe. Congrats btw