Advice please!

Holly • Got my BFP on the 8.7.14 xx
Had blood work done at 4 weeks 6 days pregnant any hcg was 525! Now breast pain keeps coming and going! Still very tired!
​It's natural for me to worry with 2 previous miscarriages i can't help worrying over everything!
​I just want this so bad but want honest opinions, does anyone think I have anything to worry about!
​Thanks Hollie 
​Xx