Anything I can do to regulate my cycle ?

hi

Is there anything I can do to help my cycle regulate . I’m off the Bc pill and it’s been wacky I came off in December had withdrawal bleed on Christmas then another period almost two weeks later on Jan 16 and now my period is five days late negative tests so I guess my period is going to come in few weeks? Any thing I can do any pills I can buy or vitamins teas? Lol help !