Thanks for your question on Health Care Magic. I can understand your situation and problem. Yes, stretch marks can cause superficial pain at the site of Mark. But better to first rule out cardiac cause for your chest pain as you are obese. Obese patients tend to have higher cholesterol level. And possibility of Coronary artery obstruction due to cholesterol deposition in coronary arteries is high. And this can cause chest pain. So better to get done ecg and 2d echo first. If both are normal than no need to worry much for heart diseases. Weight loss should be done as soon as possible. And excess fat tissue can cause inflammatory reaction at the site of stretch marks. So first rule out cardiac cause and start weight reduction. Once you loose weight, inflammation will decrease and pain will also decrease. At present you can take simple painkiller and anti inflammatory drugs. Hope I have solved your query. Wish you good health. Thanks.