Suggest Treatment For A Delayed Menstrual Period And Sore Breasts

I am 22 years old. I am sexually active with one partner. I have had previouse issues in the pastr regarding my period because my horomones were not balanced I was taking birth control. Alesse, but I have not been able to get anymore because, I have not seen my doctor. I tried getting it from the sexual health centre and was unable without a doctors note. I had unprotected sex with my boyfriend and I used the Plan B pill 5 days after. I then had my period lightly for 2 - 3 days. Ever since I have not had my period I am late. My breasts are now hurting my breasts do not feel normal they are hard and my colouring around my nipples are getting darker.