Is it true that if a man's fluid precedes a woman's fluid, the child will be male, and vice versa? And to what extent does this affect a wife's desire for intercourse, fearing the birth of another female?

Allah Almighty says: {To Allah belongs the dominion of the heavens and the earth; He creates what He wills. He grants to whom He wills female [offspring], and He grants to whom He wills males. Or He combines them [as] males and females, and He renders whom He wills barren. Indeed, He is Knowing and Competent} [Ash-Shura: 49-50]. Therefore, no one can cause conception except by the will of Allah, and no creature can change the gender that Allah has decreed. The Prophetic hadiths confirm that the determination of male or female gender is by the ascendancy of one of the two waters (the man's water or the woman's water) over the other. The wife must believe in Allah's decree and destiny, and not withhold her husband's right because of this.