Blood pressure was 130/70 and two days later checked it and it was 147/90. the morning after that it was 132/80. should i be worried?

Prehypertension: These signify prehypertension (defined as BP 130-140/80-90) for the most part. They might signify a need for close f/u--90% of prehypertensives ultimately require meds. The numbers might improve first with attention to weight loss as well as sodium/alcohol reduction and smoking cessation. These are good strategies to avoid or at least delay a need for meds.