Weird timing-what would ya’ll do????

Va

My OPK was negative this morning, but just now at midnight it became positive. Should I do the <a href="https://glowing.com/glow-fertility-program">IUI</a> tomorrow (monday) then or tuesday? The other weird timing is that my husband had just finished masturbating also around midnight so I’m worried there won’t be enough sperm for tomorrow? Would ya’ll do Monday or Tuesday? (It’s my first <a href="https://glowing.com/glow-fertility-program">IUI</a> btw)