It could def be nothing... I had 3 weeks of bleeding this pregnancy until around 11 weeks. I had a subchronic haematoma, so that was the caus of my bleeding.
The cramping doesn't sound great, but then again, it could be stretching pains or anything. I get random pains on an off throughout my pregnancy.
If I were you, and really worried, I would head to Emergency. You may not get seen for a while, but at least they might be able to do a few tests, or maybe even a scan.
All the best. I hope that it's nothing at all.

xxoo