Stress or symptoms?

So on Monday I went to my midwife appointment and she told me my blood pressure was up and that she wanted me to go to the hospital for some monitoring and testing. So I went. All my blood and urine tests came back fine but my pressure was still up. It wasn’t to high so the doctor sent me home and told me to come back on Thursday I went back Thursday and my pressure was down a little so no concerns now they will just continue to monitor it. I just can’t help thinking this could just be nothing but a little stress but I worry that it could be something more. I try not to worry but this hole thing is stressing me out. It is a no win cycle. Grrr….