TTC tips for newbies

So me (18) and my boyfriend (21) are ttc, we fell pregnant before but it was not planned and I rushed into an abortion which I regret everyday 💔 we've been ttc for two months now, I'm due on 25/11/19 but I'm pretty sure I'm not pg this month because it feels too much like I'm due on my period. So was hoping for some tips for concieving, thanks ladies 💗💗💗