1st time pregnant

Hey all! 
So I am pregnant not sure how many weeks yet, I had an ultrasound done last Friday and nothing was seen so they decided to do blood work , HCG on Friday of 93 and progesterone 15.8 then it went up to 413 3 days later but progesterone 12. I'm assuming that's good. The nurse said I am fine, but of course I'm worrying as this is the first time I have ever been pregnant , I  cramping for like 2 weeks it all stopped, I'm experiencing now just very sore breast.... any opinions? mostly in the mornings... Has anyone else have similar experience ...