Women's saddles are wider. Your saddle should support your sit bones and not much else. Likely your present saddle is too narrow. If it were me I'd not wait more than 100 miles. If the saddle still feels uncomfortable a day later after your first hundred change it. Find a LBS that treats you well and has a saddle try until you buy program. Keep enjoying that new bike. It is also great you still ride the other one.
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Sir Mark, Knight of Sufferlandria