Almost 32 weeks pregnant and in pain?

I will be 32 weeks on Saturday. I have had an awful headache all day, plus I have had some abdominal discomfort. I took 500mg of Tylenol which did not really help and I don't want to go overboard with it. For the past few weeks, I have often felt like someone was lightly choking me. My doctor told me this was normal, but it still seems unusual to me. My blood pressure has been low/normal for the most part. Has anyone else experienced these symptoms? Are they normal or are any of them something I should be worried about?