Ttc again

So I’m ttc again and it seems so much harder . I’m ebf my son and I’ve started having a period again after 1m pp. it seems like every month I’ve done the bd A LOT and weeks later I feel nauseous and crampy thinking I’m pregnant again and then right when I go to test I end up getting a period 😒

Is there anybody who conceived after having their first child, how did you do it ?