pregnancy symptoms?

KB • Dog mom. Single. 29. Cosmetologist.
How early have y'all experienced pregnancy symptoms? For the past 3 days I have been sneezing non stop along with itchy and stuffy nose (I know this could very well just be a cold but I also read that it's a pretty common pregnancy symptom) I also feel like I can smell everything..extra if that makes sense lol. The smells don't make me nauseous, I just smell smells that I didn't notice before around the house. I'm sure I'm over thinking it and it's still super early as I'm only 4 dpo but just curious how early the rest of you ladies experienced symptoms and if they were similar? 😊