Driving myself crazy!

Chelsea
Since I got my "period" ( I say it like that because it was light for 2 days and then spotted brown for 4, not normal for me), I've been having this weird pinching cramping and have been feeling bloated. Keep getting dizzy spells when I stand up and am exhausted. My boyfriend tried saying I shouldn't think I'm pregnant because I could psych my body out, yet I just feeling I can feel when something is off or different with my body. There's a chance I could be pregnant. Am I just psyching myself out or could I be right about knowing my body? Anyone else feel like they just know when they're either pregnant or when something is off?