Legally since the day you two got married, you co-own everything that is legally under his name. Which includes salaries he has already drawn, proceeds of investments, and properties. Kung karapatan lang ang paguusapan, over sa kapatid niya at kahit mga magulang pa, ang Asawa ang mas may karapatan na mag manage, humawak, at makialam sa perang kinikita ng asawa niya. And the same rule applies to the wife's earnings, properties and investments too.
Tama si Twelvth Goddess. To avoid conflicts, dapat asawa mo ang mag ayos niyan. So I suggest you talk to him about it. Baka naman kasi naka sanayan lang niya yung ganoong set-up most especially since dati naman kasi you have your own source of finances.