It’s quite normal. I don’t have much symptoms either. I am in wk 17 now already. But in trim 1, my symptoms fluctuate and almost no symptoms throughout. Currently I only see the my belly and boobs are growing, and starting to get some back ache probably due to the increase is weight.
I had similar symptoms to u. Only breast tenderness and fatigue. My breast soreness was only in my first trimester and have disappeared in my second trimester :)
it’s normal due to fluctuating hormones. don’t have to worry so much.