Chances of no LH surge and pregnancy?

Hey! I've got PCOS and am currently taking 1500mg of metformin and TTC with my husband.  I'm just not getting positive ovulation tests month to month.  It's still possible to still get pregnant, right? I've read online that some LH surges can be super short and missed with testing. We are tracking my cycle and having lots of sex... Just would love to hear if all this fun will still bring about a baby!