TTC 23

Hi lovelies,
My husband & I have been having unprotected sex for the last 3 years.. We have not really been 'trying' until recently (last 8 months) I've been tracking my period & ovulation etc ..
I'm a bit worried as we haven't conceived yet... But now that I'm looking into it more seriously what should I do?
I believe you can purchase a lubricant that attracts the sperm & helps it survive.
Also I've heard people say the ovulation stick is good to purchase to track ovulation & a pre-pregnancy vitamin ?
Ive been told by the doctors to just relax and it will happen which I have been in the last 2 months now just taking every day as it comes & focusing on other things but it's always in the back of my mind like should I be doing more to help myself conceive !?
Sincerely mrs confused !