Hello, Welcome to HCM and thanks for asking your question. I can understand your concern. Coming to your question, the pain which you are feeling that might be due to fetal body parts and you need not to worry much about it. If the pain is associated with contractions or any vaginal discharge,then only you need to be concerned and check with your gynec. Pain can be reduced by sleeping in left lateral position and do regular walking for atleast 20 minutes. Stretch marks are normal during pregnancy due to stretching of skin by growing fetus and its absolutely normal again. Stretch marks will increase after scratching that area and itching is also very common. You can use Luciara cream to the affected area, which will reduce the severity of stretch marks. One can also use coconut oil or olive oil, which are also effective against stretch marks. So all and all, you need not to bother much about it and enjoy the pregnancy. Feel free to ask any of your further questions, i will be happy to answer you.