Strange symptoms

Good afternoon,

I've been having tired legs for about a week or two. It feels like I've been wandering around the city all day. I'm also experiencing lower back pain, headaches, frequent urination, a strange feeling in my lower abdomen, fatigue, and cravings. I also have a high resting heart rate—110 this morning and 96 later. My blood pressure is 134/88.

I just took a pregnancy test, and it was negative. But I found out that it was only good until 2012. What do you think? I'll get a new one tomorrow and test again with first morning urine, or does it have nothing to do with my symptoms?
Oh, I do take the pill regularly (often with diarrhea), but I've been taking it continuously for two months. Next Sunday I have to take my last pill from the pack.