It Is Dangerous For A Girl Having Miscarriage For Last

It is dangerous for a girl having miscarriage for last two years then she never go to the obegyne for raspa or pap smear????the baby is four months Old in her tummy..Then after two years she is worried because there is something going out in her vagina the color is yellowish but she did'nt feel any pain in her body..What is the best thing to do???