What is going on??

So I’m dizzy and nauseated off and on. No appetite. Can’t walk at all without my feet swelling. This has been happening for two weeks now. Midwives aren’t concerned about it since my BP has been great my entire pregnancy and still is. Is this just another sign of labor getting closer? I’m 40 was tomorrow. Obviously it’s coming. I just feel very off and I want to know if should push for them to check for something. I don’t even know what, I guess I’m just nervous.