Anorexia after birth

So I gave birth to my baby last July, I weighed 183 pounds and it was a lot for me I’m not a heavy person I’ve been thin all my life. Plus I have crohns, which also limits my food intake. Since then I’ve lost 50 pounds with weight lifting and intermittent fasting. Well my husband and I have been trying for baby #2 (just waiting till Tuesday to test). But I’m so scared to gain weight, my husband thinks I’m anorexic since I’m still fasting and constantly working out. Anyone else developed anorexia or an eating disorder after birth? What did you do?