Low blood pressure

Ive read that its normal for your blood pressure to drop some during pregnancy; however, mine has dropped so much im having a hard time getting anything done. I was making breakfast for my toddler and felt like i was going to faint. When i checked my blood pressure it was 82/53 (im normally 120ish/80ish). Ive reached out to my doctor and he is not concerned at all. He said to keep hydrated and increase sodium. My mother in law is a doctor as well and had me do an echo for her piece of mind. It was normal. Should i be worried? Is anyone else experiencing this?