Hi..
Welcome to HEALTHCARE MAGIC..
I have gone through your query and can understand your concern..
As per your complain pain in inner thigh that is occurring on crossing the legs can be most probably due to strained or stretched Adductor muscle that is an inner thigh muscle..
It might have gut injured during running, stretching etc..
Other causes can be Inguinal
hernia,Pubic dysfunction,
Osteoarthritis, kidney stones etc.
I would suggest you to consult an Orthopedician and get evaluated and a thorough clinical evaluation and investigations like Palpation tests, x ray, MRI Scan, Electromyogram, blood tests etc can help in diagnosis and treatment can be planned accordingly..
In case if it is due to
muscle strain you can be advised to take anti-inflammatory painkillers, muscle relaxants, warm compresses,
physiotherapy under trained Physiotherapist,
massage therapy etc can be advised to relieve.
Avoiding strenuous exercises can help in faster healing.
In case if it is due to other causes treating the underlying cause can relieve..
Hope this information helps..
Thanks and regards.
Dr.Honey Nandwani Arora.