I Am Currently Not Using Hormonal Birth Control And Have

I am currently not using hormonal birth control and have only been using condoms. My menses is supposed to begin this Saturday. However, I did not feel ovulation pain this month and I have been having ovarian cramps for the last week. Starting two days ago I spotted bright red blood right after intercourse and again last night during. Today, I have been feeling lethargic, light headed, and some burning/itching at the entry to the vaginal canal. Could I be pregnant or have an infection?