Fluctuating symptoms

I need some reassurance! Has anyone experienced there symptoms come and go!? I’m 5 weeks and 5 days pregnant and I started off feeling a little Sick and my boobs were SOOO sore and I had cramping but now my I have no soreness in my boobs, not feeling sick, and I have less cramps but still have a little bit of cramps at least once or twice a day! Other then that I’m just super exhausted! I don’t know if it’s normal! I’m just fearful I’m miscarrying because most of the time I hardly have any symptoms but I had a bunch at the beginning of week 4!!