Pain during sex... Nuvaring?

I am on the Nuvaring and (sorry to be kinda graphic) when i start to have sex near my boyfriend it feels approaching its tearing the skin around the crack. I read about some side effects of the ring and i cant really digit out if this is common. Lubrication is not the problem, and its not resembling he is abnormally huge, lol... so whats the operation? Also i think that the ring have given me a lowered sex drive.
Answers:

About my period. girls answer single please?

The pain during sex also occur when I started on the Nuva Ring. I'm not exactly sure what caused the cramp but it is a side affect of the Ring. After talking to my Doctor I be told to try taking it out for sex, but for no more than 3 hours. The pain have gone away.

And the hormones in the pill can lower a women's sex drive.

What is the explanation of no periods nonetheless a pregnancy tests shows distrustful?

Have you read the instructions and checked that it's in correctly?
Have you had this since you were on Nuvaring?
It could of late be your vagina muscles have enhanced and become a little tighter.
Or The Nuvaring have made you become dry which makes entry harder.
If you find that you're have problems with it, jump to your GP to suggest another form of contraception.
Hope this Helps :)