A Study to Assess the Effect of Venetoclax on Ethinyl Estradiol and Levonorgestrel in Female Participants With Different Hematological Malignancies

This study checks whether a blood cancer drug called venetoclax affects how the body processes hormones found in some birth control pills — specifically ethinyl estradiol and levonorgestrel — in women being treated for a type of blood cancer called non-Hodgkin's lymphoma. **You may be eligible if...** - You are a female patient with non-Hodgkin's lymphoma that has come back or stopped responding to treatment - Your specific lymphoma type is one of: DLBCL, follicular lymphoma, lymphoplasmacytic lymphoma, mantle cell lymphoma, marginal zone lymphoma, T-cell prolymphocytic lymphoma, or Waldenström's macroglobulinemia - Your performance status (ability to carry out daily activities) is rated 2 or lower on the standard medical scale - Your bone marrow, kidney, and liver are functioning adequately - You are post-menopausal or have had a procedure that prevents pregnancy **You may NOT be eligible if...** - You have significant active heart disease - You are of childbearing potential (able to become pregnant) Talk to your doctor to see if this trial is right for you.