Symptoms coming and going?

I'm 4w6d and am nervous about symptoms that come and go. We got our BFP at 4w exactly and I had been feeling on and off queasy, extremely sore breasts. Over the past few days the breast pain has subsided and I feel less consistently queasy (although it's still there at times). Does this seem normal? I had hcg at 4w1d (531) and 4w3d (1478) which my Doctor implied were quite good, so trying to take comfort in that. But we've been TTC for so long and one MC, so I think I'm just extra anxious for this one to stick!