Strangely happy

I have been on Zoloft for 3 weeks and I feel strangely happy.
I have been sick for 3 weeks..
Bad bad cough, flu, so sick, so physically sick.
Yet, I feel so good. That I can work for the past 3 weeks. That I can get up in the morning and didn't have to drag myself to work.
I'm not sure. Should I be happy that I'm feeling strangely happy? Or should I be bothered that I need medications?

I saw my Dr, we continued my med, to get through X'mas, the next month, then we would start to reduce it to the minimum.
He says that it's ok for me to be back on med, that sometimes I just need that lift.
He's however, worried that zoloft may induce hypomania.

I felt a little sad today but as I'm typing.. my mood is lifting.
Let's see how it goes.
As for my cough, it's getting better with antibiotics, meds and lots of vitamins and herbs.

=)