Mindfullness making me worse?

Well....there doesnt seem to be a form for mindfulness. So I'll post it here.

So I've been going to this mindfulness group for maybe 2 months now or 3. At this public mental place I go too. In my country unlike America it seems sadly. Our goverment provides money to the public mental healthcare. So there is individual therapist you see and group therapy. It's for free if your a citizen in the country of course.
So now you understand the background. I've been like I said going to this mindfulness group.
But whenever they do this 20 mins + mindfulness. I get these intense vidi imagery in my mind. I don't know if it's my imagination or spiritual or both.
But it's really intense. I mean vidi as I see colour light and shadow. Etc.
So pretty much I see in my mind what you see when your eyes are open and looking around.

I use to do mindfulness when I was seeing this other therapist. But wasn't given any guidance and was just told to focus breathing from my nose. And was expected to do mindfulness in a hour straight even though it was my frist time.!

Anyway I experience even there intense imagery.

So for example I notice this arm feeling down my right arm as if someone was touching my arm. Next it felt like someone was behind me and giving me warmth. I had a image in my mind of an angel.
Next it gets spooky, I experience like as if someone is walking around me. Then an intense imagery of this alien like creature that was grey and thin with big black eyes crawling on top of me looking at me. I saw this in my mind, I wasn't seeing things with my eyes open. Let me be clear on that one.
I kept experiencing this angel appearing to me. Then one day Inwas in pinterest and I was just scrolling as usual as you so. I saw this image of this angel it was traditional painted it seemed. It looked excatly as this angel I saw in my mindfullness. I've never seen that picture before! It said it was angel of death! But it had golden hair, gold robe, fair skin. Golen like transparent wings. Blue eyes.
It kinda scared me because I wasnt sure if what I experienced was real or just in my head. If it was real was it angel from God or just an demon pretending to be an angel. Which I got those ideas from my mom. Cause she once went to a crazy Christian church many years ago. So she put those beliefs on me. I mean she thought neopets that website was evil. How Sabrine teenager witch 90's TV series was evil. How Pokemon the creatures names were devil names. Yeah thar crazy stuff!

Other things be like cause I'm Christian I asked God why is it this kindergarten I live next to never experience a kid being hit by a car, even though it's a busy road? In my mind I saw a massive angel coming from the ground with big massive arms out length around the kindergarten building.

Or how I saw my therapist angel it was very massive like up to the ceiling in a room and was blue but soft shapes. Had an owl on its shoulder or when Jeus comes and gives me advice when I'm upset about some thing.

Like what am I experiencing?
All it does is that and I become more sensitive to my emotional dsyfuntional at home by my mother and sister. Help.

Here are links to 2 articles, from PC's archives, that discuss some of the limitations of mindfulness:

The Dark Night of Mindfulness

Mindfulness Isn't a Depression Cure-All

Thanks for posting this

Thank you that's much appreciated

I am so glad you've posted this.

I have struggled with feeling that something is terribly wrong with me, because I have not been at all successful with mindfulness. It's all mental health professionals seem to suggest - but for me, it was hellish.

Then I began doing some deep work with my therapist. In short, I am finding that as I'm genuinely "cleaning out" the severe traumas I've been through in my life, mindfulness is not having such a frightening effect upon me anymore.

I am not at a point of being able to truly practice mindfulness, but I can envision a day when it might actually help me, rather than hurt me.