I didn't notice anything before week 6, then started to get sore BB. I also had some cramping around week 3 and week 6. I didn't find out I was PG till week 7. Thought those symptoms were pre AF symptoms. I'm week 9 now and still only have sore BB. It is hard not having symptoms, as all you want is to feel PG, for reassurance. Dispite not having any major symptoms, reality is slowly setting in and I'm seeing little changes in BB.
Only 50% of ppl get m/s, which means half of us won't. I have decided to count my blessing instead.
Good luck with you PG and congratulations.