First, you don’t have to be wealthy to enjoy caviar. You can simply choose an alternative that suits your pocket. Second, it is not the quality of the caviar that is the main dictator of the price. You can find insanely tasty caviar for $100. As long as the fish is raised in good conditions, has pristine water, and is harvested properly you are good to go.
You want to play it safe. All your activities are now in a new tone of being cautious, and that especially applies to what you eat. As you´re sustaining two lives you certainly need more energy, more food, and more nutrients. That food in turn has to be safe, or at least as safe as possible. You have sustain two lives, but you have only one immune system.
Caviar was once considered the food of the aristocracy and Russia’s true black gold. However, I can assure you that these days caviar is well in the reach of the “common” men (or women). Some brands are still only reserved for the most upper class, but luckily not all.