Pressure?

So the last two days I’ve been having what I can only describe as extreme pressure in my pelvic area...like right above and behind my pubic bone. I’m 16 weeks 2 days. I’ve felt “flutters” from baby and they’re up higher and at my appointment last week my doctor said baby is well above the pubic bone now. It’s not a feeling like uterine stretching, it’s very distinct, very hard internal pressure. Is this normal? This is my second baby and I don’t remember anything like this with my first, but it was 7 years ago.