Help!

I am 7w and 2d today and I have noticed that my boobs don't hurt as much as they did a week ago. They were really sore and felt heavy when I found out at 4 weeks and now they're not. I also haven't been nauseous, haven't had any cramping. I have been very exhausted but that's about it. I am worried something is not going right and I go to the doctor on Monday but has anyone else had this experience?