On and off breast pain is worrying me

This may be a VERY stupid question/statement but this is my very first pregnancy and I don’t know what to expect! The first and only symptom I have at 6 weeks pregnant is very sore breasts - but today I woke up and they weren’t hurting as much as they usually do and for some reason its worrying me that it means something is wrong. Is it normal for them to fluctuate in pain or is that concern for something being wrong? Thank you in advance to everyone that answers ❤️