I am not able to insert penis in my wifes vagina?

i am married 3 months ago. im nt able to insert penis in my wifes vagina, the hole is very small. when i try she is feeling lots of pain and telling to stop it. we tried many times but penis is not going inside. wt might b the reason, shud we consult a gyenacologist for this?

Thanks
Rajesh
8 answers