Pain during sex ??? Help

This isnt alwwwways... but there are some positions and instances where i cant handle the thrusting 🙈 for example if im riding, or if im laying on my side and hes sorta standing... its literally the only time i experience this pain.... and its on my right pelvic area. Is this something worth mentioning to my DR? Or just take more caution with sex??

If it is important to mention to my DR, should i make an appt asap???? Or should i just wait till my next routine and mention it then????