Gut feeling always right?

I have this sort of “gut feeling” my boyfriend is doing or is going to do something behind my back.

However, he is completely open with his phone, he’s home when he’s not working, and I have even skipped through his phone for reassurance and there’s never anything bad.

But this feeling won’t go away. I do suffer from anxiety so I’m not sure if this is true intuition or if I’m just overthinking due to anxiety?

I’m also 4 months pregnant so I could just be hormonal? Idk. What do you ladies think?