Delayed ovulation, taking new supplements

Anne
Has anyone had delayed ovulation after starting new supplements? I started evening primrose oil last month & it delayed by about 2 days. Still taking the EPO, and this month have added Vitex, Vitamin B complex, DHA, Royal Jelly, and red raspberry leaf tea plus fertility tea (has vitex/peppermint/licorice root) also been taking a prenatal for over 2 years. 
Anyone had this happen?