High Heart Rate after the flu?

I'm getting over the flu, and have been feeling steadily better for about 3 days now. I've been taking it very easy, but today just the process of bathing the dog and taking a shower myself has me feeling like I may p out. My hands are shaking, and even at rest my heart rate is 130bpm. The doctor isn't open today, and I'm wondering if this is something I should be worried about. I would really like to go to church this evening, but not if I might be putting my health at risk.