To early??? Inputs please💕

Just wondering if it’s too early to feel “off” my lower back has been hurting just enough to notice and I’ve had a headache for the passed two days and if I’m walking around for to long my vision and head make me feel like I’m drunk (but I am not lol I never drink after the fertile window just in case🤞🏼) so if you ladies have opinions or even stories from how early you had symptoms I’d appreciate it very much!!!