Separation anxiety

I felt so sad that I have to leave my baby for work. Life must go on. Currently my mil look after my baby while we both working. I'm ok that my mil look after my baby but i just felt like she don't want me to spent more time with my baby after I reached home. My intention to sleepover her house so that I can spend time with my baby but instead she took away my baby. I really don't like it. I thought of sending my baby to infant care next year. I know is quite expensive. But what is your suggestions for this? Today is my 1st day came back from work and I felt so anxious and sad. If can I don't want to work I just want to look after my baby. But I have to work due to financial saving plan for future. I'm just sharing whatever i feel because I have no one to talk to.