Regulating period

Any suggestions on over the counter stuff to hopefully regulate my period? On my last cycle my period was 37 days late. And it’s doing it again I’m currently 18 days late. Other than the past two times I was never like this. I want options hopefully with out birth control. I have an almost 9 yr old and would like to have another kid. I’m on day two of trying a brand I found on amazon called pink stork. If it doesn’t work wanting options before I end up on birth control :(