happy new year all

Just a quick update ..... after my extremely low hcg reading...... still no AF... a tiny amount of spotting but nothing - 2 days late. I Did another HPT and nothing so the levels arent increasing. Not sure what is going on.
I did this FET straight off a stim cylce and my ovulation date was pushed out to 20 days so not sure if that is what affecting the delayed AF? I thought luteal phases were the same timeframe regardless of what happened and i have never been late before ever. Just want this cycle to end so i can start another....... the longer AF takes the longer until I ovulate.
Has anyone else experienced anything like this?