Is Dryness In Vagina A Problem For Conception?

Hellow doc, Iam vijai from India, I am married for an year ,we have been trying for a child sincerely for the past 6 months, having regular sex in my wife s fertile days, over the past 4 months we have even been using ovulation predictor strips to time our intercourse...but still we were unsuccessful.....her cycles are regular...3/28....is it necessary that we start our infertility testing now....she always has very dry vagina during sex.....can this be a cause of infertility ...Can this be true that my sperms can t swim up inside vagina up her cervix and uterus due to her dryness.....please clear my doubt sir....thank you....