Ttc negative pregnancy pcod. Periods?

Hello Doctors, My periods come usually in 28 to 40 days cycle since last 1 year now. I am having pcod but no cysts . I do have grade 1 fatty liver. I got my periods last on 16 March and till now did not get my periods. I took home pregnancy test twice which came out negative. How correct is home pregnancy test for people with pcod ? Shall I start taking some medication to get my periods or there can be a possibility of pregnancy now also. I get mild cramps but no symptoms like nausea and all apart from sometimes just a burning sensation in throat. Should i take beta hcg or it can be said i am not pregnant and can take medications for getting periods? Additionaly i am also getting thi k white discharge in minor quantity only one day it was of medium quantity.