Is it wrong that i am sleeping with my girlfriend but no at 17?(10 points for best answer)?

No, its not weird. You are quite a matured young man. I salute you for respecting her, understanding that you both are too young for , and not taking advantage of her grief. You are right that she is vulnerable and in grief now. It is normal to be feel scared of sleeping alone after someone's death. However , if you are not ready for having , it is better not to sleep together. Its not wrong, but its not wise