Planning for next month

My period is due tomorrow, so far I have had negative tests. I've been having cramps and have brown discharge for the past few days, so if my period shows up I'm not going to be upset, but I feel like I need to try harder. I want to try preseed! And I might start tracking my ovulation. It's so frustrating. I got pregnant without trying last March and miscarried at 13 weeks, but after I got my period back after my d&c, it was completely normal and right back on track. And I've been trying for 3 months with no luck. I know there's no way I'm missing my ovulation because we do it allllll the time lol.