I have been having unprotected sex with my boyfriend for over 6 years but never been pregnant . should i be worried or concerned ?

Infertility: Infertility is considered possible, and evaluation should be done, after one year of regular unprotected sex mid-cycle, with intent to conceive, without success. If you've been more or less continually sexually active during this time including frequent mid-cycle sex, you or your bf might be infertile. Start with your gyn, who might then refer you to an infertility specialist. Good luck!