Is 102/69 BP normal?

Sure. As long as you feel well, it's perfectly alright.
It can be. Lower than average (120/80) blood pressures can be normal. If you are not lightheaded or dehydrated, 102/69 is perfectly acceptable. Especially if your heart rate is less than 90. Make sure you're drinking several glasses of water or more a day and you're urinating regularly. If you have further doubts, see a doctor and have them check you out.