Pregnancy And Mavenclad

I've a question for any one who's been on Mavenclad and pregnancy... So long story short.... I've been on Mavenclad for the 2 rounds....then got the go ahead to get pregnant...I did ....baby now a year... So I haven't been on any ms treatment for over 2 years.... How long before you got relapses? Just trying to plan baby no.2...and want to get the jump on it ..cos if I go back on medication there won't be a baby no.2 ....