Girl I had this problem for 3days bleeding and cramps than I end up miscarried yesterday at 6weeks and 4days :(
If you're concerned contact your doctor or nurse or visit the ER.
Bright red / period type blood is something to have looked into. Clots or tissue are a huge emergency!
Spotting, or even a very light bleed for a brief moment (especially after sex or internal exam) can be considered normal.
Cramping can be normal as your body adjusts to being pregnant, especially with movement and strain. If it is painful and disrupts activity then go in. Or if lighter cramping persists or worsens then also go in.
A combination of blood and cramping (especially without sex or exam) is something you should at very least call your care provider about and have them advise you.
Me personally id go to the emergency room just to be safe Im 6weeks pregnant and had some cramping i went to the er and they did a ultrasound said everything looked good. It doesn't hurt to go