Is It Safe To Take Benforce And Xmet At The Same Time Along With Thyroid Medicines?

Hi Doctor,I am 26 years old overweight with PCOS since two years. I have not had my periods for last 5 months. also my TSH level is 6 which is slightly higher than normal. My doctor wrote me Benforce M & Xmet R 500 mg,2 times a day for next three months, also she asked me to consult a physician to get my thyroid doses prescribed. I wanted to ask you that is it safe to take benforce + xmet at the same time ? also the thyroid medicines ? Also i am not planning of having kids in near future. Please suggest . Thanks A ton !