I need another's opinion

I'm so confused as to how I should feel about my husbands behavior please bare with me. Last night he told me that he has been hiding money for months. This was after many drinks and that probably the only reason he told me. I am a SAHM, he is the only income in our household and we were doing great before the quarintine and he couldn't work. Last year he loaned a friend some money and recieved a car for collateral. He didnt even give 1/2 of what the car is worth so he could easily double his money. The situation didn't feel good to me but even after telling him not to he did it anyway. I have been the main contact with this person because he doesn't want to deal with it. He told me flat out that he hid more to "motivate me to get our money back faster." I see this as flat out manipulation. I have been stressing so much over money as I handle the finances. He has a business account with his partner and then transfers everything over to our joint account so I can budget and pay bills. Apparently he opened a separate account and has been stashing money, he didn't say for how long. I feel so betrayed, like he didn't trust me enough. I dont mind him having a separate account but I also have been spiraling into depression at the thought of having to put my kids in daycare to go back to work. I love staying home with them but obviously I will do what I need to. He has known of my stress and feeling for a long time, watching me break down and hasn't said anything. I'm so pissed off, hurt, I dont even know. If he's hid this what else is he hiding? I'm also 5 weeks postpartum. Am I overreacting? I asked for your opinion and I don't want anyone to sugar coat it. TIA