In such a situation, it’s akin to a minor injury, the force of which only you are aware of. However, there’s no need to feel too guilty. Since it’s winter, there’s still some clothing insulation. Over the next two days, all you need to do is closely observe the baby’s scrotum for any signs of redness, swelling, or bruising. Also, check if the baby is complaining of pain or has any abnormal urination. If so, it’s necessary to visit the hospital for a follow-up. Otherwise, there’s absolutely nothing to worry about; don’t feel guilty.