Was doing home care, took maternity leave, had a baby, and I have since been told I cannot go back to my job. What do I do?

I do senior caretaking via independent contracting and went on maternity leave at the end of October to have a baby. I have taken 3 nearly 3 months off and when I contacted my employer, I was sent a text that I am not under any circumstances permitted on the property and not to contact them again. I haven't done anything to warrant losing my job. It was okay for me to return before I left and it was assured my job would be there.