Help! 36 weeks 4 days

 just wondering if you have any advice, I can't get any appointments with my midwife but my feet have been very swollen for the last two days which I haven't had before and also keep getting a pressure/pain on and off that starts from between my shoulder blade, up my spine and into my head which makes me not move and dizzy but does go away after a little bit and generally feeling unwell, I do have on and off pelvic pressure and pain just wondering if it's normal or any cause for concern as can't get a hold of my midwife, if you have any advice that would be very helpful, Thankyou