Last month I had my period from April 11th through April 15th and between that time I had surgery on the 13th because they found cancer on my vertebrae‘s I was supposed to start my period the 11th of this month and it still has yet to start i’ve taken so many pregnancy test and most of them coming out negative And some of them have really faint faint lines could my surgery be affecting my period? I have another surgery on the 21st of this month and I don’t know what I’m going to do if I don’t start my period soon. 😯😯