Fmla Indiana

I qualified for fmla I get 12 weeks off for maternity leave and I get 4 weeks of pto through my job . I’m very unhappy at my job and I’m only there right now bc I’m pregnant and I need to pay my bills I don’t want to be left w out a job while pregnant. My question is would I get in trouble if I decide not to go back to work after my maternity leave ?