Both the points you mentioned have a role in increasing the Vata Dosha of the body.
Your first point can be answered as a no if diet and lifestyle are correct
But having intercourse in abnormal positions can have multiple affects on your body including increased vata dosha.
And Vata dosha increase can lead to many diseases including various inflammatory conditions.
Next Steps
Endometriosis can be very well managed through Ayurveda. For further discussions and information, you can consult anytime