An internal ultrasound is a painless procedure which causes no problems at all. After this ultrasound, you can resume your daily routine. However, you may notice slight discharge after the ultrasound, which is nothing but a lubricant gel coming out, which will stop within a few hours. It is a painless procedure and causes no harm to your baby, and there are no chances of miscarriage due to this ultrasound. If you feel pain or cramping following an internal ultrasound, consult with your doctor as soon as possible.