I just entered my second trimester and the nausea finally backed off, such a relief honestly. Did it stop around the same time for you all? I was starting to think it would never end.
Usually those early symptoms calm down once you hit the second trimester. Both times my nausea faded by around month three. If yours drags on past that or feels severe, do mention it to your gynac.
For most people the nausea and tiredness ease off by the end of the first trimester, around week 12 to 14. Mine was awful but it did finally settle by week 13 and I felt human again. Hang in there, the second trimester is usually much kinder.