My boyfriend and I have been together for 8 months and are both in our early twenties, he is a vrgin but I have had sex with previous partners.

After about 4 months we decided to have sex. At first he was nervous and so would lose his erection before penetration.

Now I'm not sure what the problem is. He doesn't lose his erection any more when we try to have sex but it still doesn't work.

It's like my vaginal opening isn't anywhere near big enough, it feels like he's just trying to push into flesh.

We've tried using lube, lots of foreplay, lots of different positions but nothing works.

Could the problem just be I'm too tight/ he's too big for me? And if so is there anything we can do about it?