Can these factors delay my period?

Hello everyone. Before I start I would like to say that anyone who is going to answer this question, I would really like some mature and well descriptive answers. My period was 2 days late last month and it didnt start til June 4th. It was heavy and it lasted for four days. Yes, I have had unprotected sex throughout the month after my period and I am aware of the consequences. My fiance and I have both been tested and negative for STDs. He always pulled out and I finished him off by oral before he came 2 minutes after the sex. (And he would always pee and clean himself off if we wanted to go for a second round.) On June 16th during my expected ovulation I got really ill. I took nyquil and some allergy medication to allieviate the cold. From the beginning of June until last week, I have been taking some dietary supplements (CLA and the Green Coffe Bean Extract and working out mildly.) throughout June I have been experiencing alot of stress with my fiance and money issues. I have been getting into some arguements with my mother day in and day out as well. Today is July 3rd and my expected period was July 1st, so I am two days late. For 2 days now I have been experiencing a increase in thick-white discharge (no itching is present), sore/tender breasts, and a slight cramping here and there. I would like some advice as to why my period is late. Thank you. It could be many factors that I have explained but I would like some input.