I want to be a SAHM

Hi everyone. My name is Kristin. I have a 2 year old daughter and my DH and I are TTC another. I am currently a teacher. I took off about 6 months when my DD was born, but went back to work. I love teaching, but I feel like the demands are getting greater and greater. My class sizes increase, the number of students in my class go up, and the paperwork; which amounts to me not having a lot of time for my family. My husband is scared to not have my income coming in. So am I. But I am so unhappy. I leave for work at 7:15 or earlier in the morning and then I get home most nights around 6 PM. I arrive at work early and I leave work late. I work on my lesson plans and grading at home during the night and weekend. I TRY to do it all at school, but it never happens. I tried leaving as soon as I am aloud and doing it all at home and that is even worse. When I get home at 6 PM I cook dinner which we eat later than I would like. Then I clean up some from dinner. I sit down at like 7:30 and play with my DD give her a bath and then put her to bed. I spend.... 2 hours with her on a good day that is not spent in a car, or with me engaged in something else. I am burnt out. I am writing this now while my husband plays outside with her because I have a headache and needed to take something and chill. I get her in bed and then clean some more until about 8:30 at which point I start grading papers or doing lesson plans. Sometimes I grade papers while I watch TV. I crash into bed at 10:00 only to do it all again the next day. My husband thinks he does a lot. He thinks he does half the cleaning, but he doesn't! He has not cleaned a bathroom in MONTHS, he considers unloading the dishwasher, and running the vacuum now and then helping with the cleaning. So then I spend my weekend trying to get the house back in order. Now take 3 weeks in a row like I had recently. We went on Vacation for me to get home and need to go to my parents to help my dad over the weekend, then I was home but back at work, then this past weekend we went to visit his family. Our house looks like a disaster area! I am so tired all of the time and I feel stressed out. I am sick of trying to be a trooper and doing it for the family. What I WANT to do for my family is be at home with them, caring for them, keeping the house in order, and making them meals. Now I think the ideal would be SAHM, but I think WAHM would be fine too. I am thinking about doing in home daycare. I know from experience that there is not enough quality care available. I know I would be great at it. But again DH is scared. He thinks it will not work out and he is scared that if I leave my job I won't be able to get another. And I get that and all, but I hate making decisions in fear. Any thoughts or suggestions would be helpful. Thanks.