What is wrong with me?

I don't even know where to start.. I have been married for a few years. Last year we were blessed with our first baby. I don't regret motherhood one bit. I'm so glad I have my baby boy. My best friend lives 40 miles away and has 3 children of her own. She's the only friend I have. I don't consider myself to have any family because they tried to wreck my marriage and just have complete control over it. It was a lot of manipulating from their end and in order to save a good, blissful and healthy marriage from falling apart I had to cut ties with the family. Fast forward 1 year... I am the loneliest person ever. I'd be lucky to have someone ringing my phone.. I love my husband and I know my husband loves me.. But he's a serious workaholic. I mean for God sake he's even talking about the business in his sleep! I have to beg him to take a day off. Otherwise he will work about 14-16 hours a day 7 days a week. This includes coming home and dealing with all the admin work. I have to talk to him about the business in order for me to get his attention. I know he's doing all this for us but I am so alone. I can't remember the last time we hugged.. I have spoken to him about how I feel at least 10 times in the past year.. But he tells me that I've got everything I could possibly want and I'm living so comfortably. He fails to realise its not about the materialistic things but it's about how I'm feeling in my head. But now I feel like I'm not right in the head anymore. I don't know anyone in the area I live in and I've lost all my self esteem to the point where I don't feel confident going out. When I do want to go out my legs go all like jelly and I get extremely anxious. Then I start to think what if something happens if I take my baby out... What if we get into an accident or my baby becomes sick.. It's just me and my baby at home all day. I play with my baby during playtime. I spend every hour of everyday with him. If he's up at night I'm the one seeing to him which is fine with me. I just don't have an adult to talk to. I feel like the loneliest mum in the world. I told my husband that I think I maybe suffering from depression but he thinks I'm being silly.. I used to be the most confident person. I was loud and I would make point of view heard but now I could stare at a blank wall for hours. I feel mentally and physically weak and I don't have anyone to turn to...