Where do I start? Do I have the strength?

Hi everyone, I'm not really a single parent as I am still married and with my husband of 5 years but I want to leave him. I am South Asian and had an arranged marriage to someone who my family had known for years. We have a three year old daughter and I work full-time. My husband has not worked since 6 months into our marriage due to a chronic illness. So for the last 5 years I have supported us both and pay for absolutely everything. The pressure and stress is getting to me and I can't cope anymore. I don't love him, I never have but I really thought I would give it my best shot. He was desperate for me to have a baby and I kept telling him I wanted to wait until he had a job. I didn't know that his condition would get worse so eventually agreed and had our daughter. I took six months off for maternity and went back to work full-time. He has been our daughter's primary carer while I've been at work. He has to have countless medical appointments and I have to keep taking time-off work to go with him(he can't speak English and hasn't even bothered to try and learn in the last five years) He doesn't get any benefits because he's not disabled and I earn too much for him to get any other sickness benefits. He counts every penny I earn and spend. I resent him because I work for the money but he dictates how I spend it. He has never let us go away on holiday because they cost too much! I earn over 26k a year and I know my limits but he begrudges me everything I buy. Every item of clothing I have bought for my daughter has been with him next to me and his choice. I have never been able to go into a shop and buy my daughter what I want since the day she was born. If I buy her toys, shoes, clothes he'll say he doesn't like them and take them back to the shops. I honestly cannot think of a single item of her clothing that he hasn't chosen. He will go out of his way to buy a bottle of milk which is 10p cheaper or a loaf of bread that is 5p cheaper all in different shops. I can never go to the supermarket alone, he always has to go with me and starts making comments if I choose what I want. I just let him buy what he thinks we need and leave. Even if I go to the shops on the way home from work he will inspect what I bought and want to see how much it cost and then be in a nasty mood with me. I am sick and tired of living like this. He opens all my bank and credit card statements and scrutinisies every item and questions me when I get home. He even sits there with a calculator and my statements counting my spending! I have now changed all my statements to online delivery. He takes my bank card off me every week to withdraw cash and pay the rent and then prints out mini-statements to question me with. If I use a credit card for a purchase I know I can afford he goes mad and tells me I wouldn't last six months without him, that I will end up bankrupt. He acts like he's the breadwinner!
I want to leave him but I'm scared to because of my daughter. He loves her so much and I really can't say whether he'll get violent if I try to leave. He has a terrible temper but has never been physically violent. He looks after her during the day as she hasn't started nursery yet and I don't know if I would be able to afford childcare. That's the only thing stopping me at the moment. I don't have any family that could look after her for me. I don't want to reduce my hours or leave my job because it's the only thing that's keeping me sane. Has anyone got any advice? Please help me because all I do is cry by myself, hidden in the bath because I have no one else to turn to.