Help I've lost my pregnancy symptoms!!

Jessica
Help! I'm just over 7 weeks pregnant. This pregnancy is a huge deal to us because we were told we'd never conceive naturally but it happened! I've had some bleeding on and off since week 4. We had a scan on Monday and they found a good heart beat and said everything looked great. They couldn't work out why I was bleeding. 
​Two days later I start bleeding again and today I seem to have lost my nausea. Where has it gone??? Little worried as I was using that to reassure myself that all was ok. My boobs are still sore etc.  
​Any wise words of wisdom that might make me feel better are most welcome x