feeling off

so I'm about 25 weeks pregnant. last weekend I started to feel off. I would get up and feel dizzy, I could feel my heart beat in my ears (if that makes sense), and I had an overall feeling of just grossness. I was out of town visiting family so I went to urgent care to have my bp checked to be safe. it was higher than normal, but still within safe range. almost a week later I'm still feeling the same way. I have a doctor's appointment this morning, but I'm just wondering if anyone else has experienced this and everything been ok. I never experienced this with my first pregnancy.