If we'd used King as gender neutral poisition in English for job at the top - clearly King wouldn't then be used for male consorts either just one top spot.
We'd have female Kings - so title of King would already be in use.
You'd have avoided confusion between Queen Regnant and Queen consorts roles.
Queens Regnant in England later Britain did not make their spouse King - they name them Prince Consorts or other titles.
Mary Queen of Scots, made her second husband, Henry Stuart, Lord Darnley, King Consort of Scotland - which caused issues and many thought that was a job for the Socttish parliament and when she kept power from him cause further problems and weakened her position and led to her path of losing power altogether.
I think the Polish Queen married a fellow monarch and united the country with another - like Queen Isabella I of Castile and King Ferdinand II of Aragon first monarchs of a unified Spain - though that left Ferdinand with problems after Isabella death till he declared his daughter insane and ceased back power.
Although if she was pregnant and the Queen she could do what she liked.
An unmarried pregant Queen in tudors times would not have kept the crown - any child would be a bastard and would not be considered a legitimate heir. Any quick marriage would bring all the afore mentioned problems round power sharing.
You ruled becuase the powerful Lords and later - after Stewards- parliment accept you'd in the position.
Mary and Elizabeth being declare bastards by Henry VIII is why there was 9 day Queen - Lady Jane Grey as some lords tried to use the doubt about their legitimacy to gain power. Mary Queen of Scot at time Queen of France declared herself Queen of England when Mary 1 died on basis Elizabthe was a bastard.
I image in ancient Egypt with out centuries of Christian doctorian about marraige and legitimacy the rules would be different - though they may likely also had constraints on them. Hatshepsut records have been chizeled out of monuments because a later pharaoh likely wasn't secure so needed to erase idea of female kingship.