Zoloft effecting periods?

Maddi • I`m most likely laying in bed listening to podcasts, watching How I Met Your Mother, embroidering, or all 3 at once. But I mean, I`m cool. Get to know me.
I recently started Zoloft and I know it doesn't usually mess with your period, but I'm a week late today. 
Does anyone else take Zoloft and did this happen the first time?