Hi there, just an FYI really, not sure how relevant given that Aloe isn't a 'prescription medicine' or anything I guess - but might be worth asking?
I asked the Locum Doctor I saw today about a specific acne topical solution I had... she had a little guide book that lists drugs specifically in relation to pregnant woman and it grades them for safety etc.
She also told me that pharmacy's have a 'bible' of drugs and when they are and aren't safe to use - her suggestion was to pop in and see a Pharmacy and ask them to check it in their books too.