Suggest Remedy For Delayed Periods

Hallo. My period came on 17 Jan, then 20 Feb. Today is 24 March and no period yet..In the last few days I had cramp on and off, bit of white discharge every now and then, but no period. This morning I took pregnancy Test and it was negative. Is it a normal late period symptoms? My husband and i are TTC, btw. Thank you.