Greetings Freiya,
Welcome!

Through explorations into other realms, we've found that the people who find hell are the ones who believe in it. So, many churches and persons are changing their beliefs about hell.
Hell, we could do without it entirely!

The protection your rosary gave you from the red ants is so wonderful !  The rosary's power has deveoped from the Love and Faith you and others have. Love and faith are more powerful than Hell !

(I suspect that your sleeping mind was trying to warn you about the possibility of being bitten by the red ants and so it used the strongest images it could to try to wake you and make you aware you could get bit. (Their bites sting !) so your dream was about their danger and not truly about any hell place.
Keep the faith !

Bets

So here's what I think happened; I think you were gonna have a pretty good dream but the ants turned it into a nightmare. Don't forget; our subconscious mind will try to make sense out of "physical feelings" while we're sleeping. The pain is often much stronger in dreams and we can't do anything about the pain as long as we're stuck in the dream.
So my version is; you were on the way to hell, you were the only one who knew what was going on, who knew where you were going. Being aware of the things that are going on is very important. There's a reason why they say about some people that they had their "awakening". It's people that suddenly see they have a choice, this world is not some stream that's dragging them along whether they want to come or not.
Then some ants interrupted your dream by biting you. As it didn't wake you up, so you couldn't know who had done it, your subconscious mind "thought" there must be someone behind you causing this pain.
(as to the question why it was hell you were going to; could it be that that's how you see this world, as some kind of punishment?)

hope I could help,
good night,
Vagabound