Some people believe it gets worse with time, me? not so much, but I can only speak from my own experience.
What is a definite issue though, stress does exacerbate bipolar symptoms. So the voices and delusions may not neccessarily be about getting worse, but a response to stress.
I've had my worst episodes during natural life stressors. For example, after my brother died, I went nuts. Saw things, had random b1tchfits, public meltdowns, the works. Then just as I got back to "normal" my dad died too... then I unravelled seemingly completely, argued outloud with a myriad of voices, got into trouble at work, pdoc wanted to hospitalize me. Thought I was possessed, scared the shyt out of my child. Just overall crazy acting....
Then I got better and haven't been that bad off since, its been 3 yrs.
So what I'm trying to say is, don't automatically assume the worst. It really could be stress making your bp go haywire.
Reserve judgement for later.