Pregnancy after a miscarriage

I miscarried last month. I thought you were more fertile after after a miscarriage. However I did not fall pregnant after mine. And I did ovulate per my LH strips and O pains. Yet here I am with AF in town picking up tampons which are right next to the pregnancy tests, to add more insult lol. I feel like I'm right back at square 1. Not trying this month. Not preventing but def not trying. It's exhausting