Conceiving

Hi. So my fiancé and I had sex on Thursday and I just got on my own ovulation test this morning that I’m in a high fertility window. Is there a chance I could become pregnant? We’ve been trying and trying for months and hoping this is it. Could you please help me out. I’m wondering if we should have sex again to protect ourselves for a higher chance for us to be welcoming a new addition to our family. We’ve been trying for almost a year.