My readings today are 101/62 with 88bpm and that's resting. what's the lowest readings that are still within normal range? highest dia i've had is 85.

Not a problem: "low blood pressure" is a "pop" diagnosis in some countries; most physicians in most parts of the world don't worry about it. Lincoln said that your legs need to be long enough to reach the ground. Your blood pressure needs to be enough to get it around your body. If you're able to get around and feel okay, it's happening. Don't fret about numbers.