I am 22 years old. I have a 3yr old and a 1yr old. After my first child I noticed my hips starting to pop. Mostly when i stretch them out as in sitting indian style. After my second child it has gotten worse. It mostly occurs during sex, usually when I'm on top. It's becoming quite annoying and very distracting Is there anything I can do? Maybe certain stretches? Or should i see my doctor about it?