Long but need advice please.

Leticia • Hello, I`m the mother of two wonderful kids, Jay who is 5 years and Pyn who is 1. I`ve wanted another child as soon as Pyn was born but chose to give her my all before trying for one. I`m ready now!
So my husband and I have been together 3.5 years but only been married 6 months. With that being said we have never had a perfect relationship, but what relationship is perfect? We fight every other day but it's usually over stupid things that wouldn't matter in a week and we always get over it at the end of the day. The last several weeks we've had a lot of strain hitting our marriage. Had to put one car in the shop, both our mothers had medical problems, mind ended up in the hospital for a week and his found out she has cancer. We have been digging ourselves into a huge financial hole and now his checks are barely covering our weekly bills. I know stress and outside problems effect a marriage but ours is having a negative effect. On top of our money problems I've just realized he's gambling away money he knows belongs to other things. I told him I can't trust him with money and now he thinks I don't love him. I was hurt very badly knowing he spent our last $100 at the casino. How can I show affection to my husband when I don't care to be around him right now? I love him, that's not the point but he wants me to show him love and that I just can't do right now.