I really shouldn't......

I cycled into work today. The ride was fine, but when I got to work and carried my bike up the stairs I got quite dizzy. And then it felt like a struggle on the way home. I think I need to not ride to work whilst I am on chemo. It's too far. It's 20 mins. When I was fit and well it was a breeze, but not now. I can manage going to my parents' place which is 5 mins' bike ride away but not to work. It's taking too much out of me. 

I really want to do more aerobic exercise other than walking as I am putting on weight. But I guess I am going to have to wait till I am a bit better to exercise more strenuously.