AF or IB? confused..plz comment

since i found out i started spotting today it went from brown to brownish red..if it was a period it woulda got heavier/darkier with clots throught the day not still spotty it dont have any clots im really confused am i pregnant? im cramping still and having back pain and im getting dizzy alot and having headaches off/on and they be painful i hope its not in my tubes from my failed tubal. i also wanna put earlier today my temp dropped to 97.3F then slowly it rised again to 98.0 then 98.2-3 then now its 98.8 im so confused