It can be very normal to not have symptoms. With my first pregnancy if I didn't know already I'd never have guessed I was pregnant apart from my growing stomach. I had no sickness, exhaustion, my breasts felt normal, no funny tastes, no food aversions, nothing at all. I didn't feel movement til after 20 weeks (anterior placenta) so literally felt completely normal.
This time round however I have every symptom going lol.