my womanly issues

So Im always pretty dry down there even when Im aroused and i have to apply lube to bd and during sex the lube seems to wear off n cause friction....Im 28 yrs of age and ive also never had any form of orgasm not by myself or with a partner not with clitoral or penetration... I also have no sensativity down there or on any of my lady parts.... I am wondering could this be a reason why i never gotten pregnant and also what can i do about the dryness? and is there anything i can do or take to bring me to a orgasm or help with my lady parts being num...