have you experienced this?

12 dpo. Af due in 2-3 days. Got a bfn today. Had a few symptoms at the start of the week. Some subsided and some remain. Has anyone experienced this and ended up with a bfp? I know I'm not out until af actually shows but with some symptoms disappearing and a bfn at 12 dpo, I'm thinking I'm out. Just looking for some hope. Thank you.