Colposcopy then late period

I had a bad cold for about a week then found out I had abnormal cells on my cervix. I was devastated about this news and stressed out. I scheduled my colposcopy a day before my period was due ( usually get it every 26-27 days). Also I had a pregnancy test before the procedure which tested negative so I figured I was ok. Come Sunday the condom acryally broke and I took plan b on Monday .. Which would have been the 28tj day of expecting my period. Now it's Wednesday and nothing. My breasts aren't as sore but I am freaking out. I have no other symptoms except weird cramping. Does it make sense I can be late due to these circumstances?