Help.. First Pregnancy!

I'm about 6 weeks 6 days and I feel as if my symptoms are decreasing. I've had very light cramping since around Dec.15 mostly at night time or sometimes not at all. No spotting or bleeding. I've been nauseous almost every day and actually threw up on Saturday. Other symptoms have included extreme fatigue and very sore tender breasts. I also was getting headaches about every night. Yesterday and today I had a BIG appetite and only slight fatigue and slightly sore enlarged breasts. I'm very paranoid and my first appt isn't until Monday. Do symptoms come and go? Could this be a sign of miscarriage? This is my first pregnancy and it feels like a miracle as we had given up trying. Just need some peace of mind or a little reassurance until Monday. Sorry if I sound super crazy! 😔