Low blood pressure?

So I’m 7 weeks pp and I’ve pretty much always been on the “lower” side of normal like 110/60’s sometimes even 108/60’s. The only reason I’m checking my blood pressure is because I have extreme anxiety over it after my first daughter I had elevated BP after birth 3 years ago. Anyways, I have a wrist cuff, and I’m pretty positive I’m checking it right, sitting still for 10 minutes sometimes taking 3-4 readings. But every once in a while after sitting there and relaxing for 10 or 15 minutes I will get a lower reading like 97/67.... my question is, is that normal? I don’t feel like I’ve ever had readings that low. Granite it’s happened three times and I’ve been sitting there for a while completely relaxed, but is this sowmthing I should be worried about? Having health anxiety it obviously scares me, but can sitting still for that long and being relaxed lower it more like that? Sorry for the ramble any answers or advice would be greatly appreciated!