@Sunnyside226 You can waffle on if you find it helpful to vent and get things off your chest! That's what this space is all about, a safe place to be open, vulnerable, and connect to others who can listen and provide support.
Instead of looking at it like, you should have gotten better from the nightmares, maybe look it as, 'wow, it's been two months since my last nightmare, that's progress!'
Recovery is never linear, we have ups and downs along the way, but you must have been doing something right to have that length of time nightmare-free. And besides, you're under an unusually high amount of pressure right now so it's no wonder your brain is lapsing back into stress-responses like having nightmares.