Hi Katie, cant say I know much about it, only diagnosed last July. Been on mtx since then, had various side effects, but not mood swings. Hopefully someone will have answers for you. Sorry this is a problem for you, it must be very hard with taking care of a 6 month old too. Look after yourself. (if its any consolation I work as a nanny/childminder, so know what its like to care for little ones!)
BARBARA