I am 34 weeks pregnant and about a week has passed with persistent, new symptoms that I have not experienced before. I have back pain, nausea, fatigue, head pressure, consistent feeling like I will pass out when doing mundane tasks like washing dishes or just laying down, dizziness, and I can not sleep because of the back pain and feeling of passing out. I feel like I want to pass out right now and I am only sitting down. My muscles are weak and tired, they feel strained with simple tasks like chewing food and typing. I have changed my next Dr. Appointment to a sooner date, should I be worried?