Water tablets and green tea tablets?

Kat • I am 22 and Engaged. Been with fiancé 6 years. Not getting married anytime soon and not hoping for baby anytime soon.
Iv been using these tablets for 6 weeks now, iv noticed some results in my moods and water retention. Does anybody else use these products? Since taking them I haven't took my period and it was due a week ago, could these tablets be messing up my cycle?