Diagnose me...

I went to the doctor today. I am 36.4 weeks. I had a non stress test. He said the baby looked fine but I was having some contractions. He believes they may be Braxton Hicks. I have been cramping really bad with pain in my lower back and lots of vagina pressure. My blood pressure today was 156/88. No protein in my urine. I have had a headache for the past two days. Very very nauseated. Doctor told me to go home, rest, take a nap if able and if my headache isn’t completely gone then I need to come back in the morning. I took about a 45 minute nap and when I woke up my headache isn’t gone but it hasn’t got worse but my pain in my lower abdomen and back seem worse. Now I also kinda feel dizzy. What’s going on with me?!?