Deodorant is fine; perfume is almost certainly fine - the fragrance purge is anxiety with an aesthetic. The real changes: your first-trimester nose becomes management, and spraying clothes over skin spares reactive pregnancy skin. Darkening underarms are hormones, not your deodorant.
The answer first
Your deodorant is fine, and your perfume is almost certainly fine too - fragrance on skin, at normal use, is not a demonstrated risk to the baby, and the wholesale fragrance purge some influencers prescribe is anxiety with an aesthetic. Two honest nuances live inside that reassurance, though, and they're worth two minutes.
Nuance one: your nose is now management
First-trimester noses turn merciless - the signature perfume you've worn for years can suddenly read as an assault, and scent-triggered nausea is one of pregnancy's most reliable party tricks. That's the real reason most moms change fragrance habits: not safety, survival. Lighter scents, fewer sprays, or a fragrance holiday until the nose calms down - all legitimate. The nose usually files its resignation by the second trimester.
Nuance two: where you spray matters more than what
Spray on clothes rather than skin if you want the practical middle path - you keep the scent, skin keeps its distance, and sensitive pregnancy skin skips the alcohol hit. Skin that's already reactive can redden or itch where perfume lands, especially neck and wrists in the sun, and irritated skin on a pigmentation-alert body is worth avoiding on principle. Deodorant-wise: pregnancy sweat is real and increased, an unscented or mild antiperspirant is fine, and if the underarm skin is darkening - that's hormones, not your deodorant - switching brands won't un-pigment anything, whatever the aunty consensus says.
What we do in our own bottles, for the record
Our massage oils carry their scent from the botanicals themselves - rose, lavender, geranium at massage strength - and the one standing rule we print everywhere: patch-test first, and if you're in the first trimester or your doctor has asked you to keep essential oils minimal, ask before starting. That's not fragrance fear; it's just the polite version of dosage respect.
The one-line policy
Wear what your nose forgives, spray clothes over skin when in doubt, and spend your pregnancy caution budget on the things that earn it - this isn't one of them.
