All these symptoms could it possibly be?

At first I thought it was from my miscarriage but then I thought about it... I've had most of these before I got pregnant and they've only been getting worse.

- Fatigue
- Bodily Discomfort
- Unintentional weight loss
- Bruising way to easily/Random bruises/Bruises that are dots clustered around one another.
- Can't stand or sit for to long without needing to lay down (15 minutes or less before I have to lay down.
- Extremely tired
- Dizziness (worse when I wake, the room spins as if I've drank too much alcohol. I don't drink)
- Nausea
- Joint pains and muscle weakness.
- Bowl movements always changing and are all around odd. (TMI I know...I know)
- Fever at random times
- Loss of appetite
- Headaches
- I've been getting infections a lot lately.

Could it be? Should I see a doctor or is it just something else?