Need advice.

My waters broke at 30 weeks and I’ve been in the hospital ever since. I have had no further leaks or bleeding whatsoever.. my doctor thinks my bag may have resealed as baby girl has plenty of fluid surrounding her now.. so they want to inject dye into my amniotic sac and see if it comes out onto a tampon. My doctor says the biggest risk is my sac rupturing again but... it’s already happened so she says I’ll just deliver at 34 weeks like they initially planned. If I don’t leak onto the tampon they will let me go home and go to full term.. what should I do?