Advice when ttc?? This is my first time!

Hi ladies, a little background about me is that I am 24, been married to my wonderful husband for a year and 1 month and this is the first day of cycle 3 on ttc. I was SURE we conceived this month because I usually have a 25-27 day cycle and this month was 30 days 🤔😩😓 I'm wondering if anyone had any suggestions on what helped them the cycle they got their BFP? I am going back to law school August 15 and would like to conceive during the next two cycles to try and avoid being in labor in the middle of the semester or the middle of finals. The timing would be perfect if we could get pregnant this month but we all know it's much harder to conceive than we thought before actually ttc. Hubs and I are both 24 and in great health. We eat a low meat and highly alkaline diet and work out pretty regular. Any advice on what we should try? Is preseed or fertility lube a good idea?