Am I really at risk of not being allowed to re-enter the US?

Hi everyone,

Am I really at risk of not being allowed to re-enter the US?

I'm currently undergoing adjustment of status, PD current (for several months) but no green card yet, my dad filed for me.

I'm taking a trip to the UK In a few weeks and I'm scared about not being let back into the US when I get back (3 weeks trip). I've been seeing horrible stories about people being turned back at the point of entry and it's causing me to worry.

I have no criminal record. Came in legally as a student and adjusted my status here. My tavel document is valid till 2029.

Please advice.