Yoga with a picc line

Hiya, I'm starting chemo on Thursday..had a picc line put in last week. Im quite active usually, run, swim and practice yoga every day. I know I can't swim and probably won't have the energy to run. But. I love my yoga. And the nurse who inserted my line told me to use my arm normally. That I could do yoga, no deep inversions, but I could do arm balances wich I love. However, everything I read is saying don't over stretch the arm, no repeatative movements and no this that and the other along with no weight on the arm. I get I probably won't have the energy to od amr balances. But I'm even nervous of doing a down dog as it's and inversion, or a warrior two because or stretching my arm out. Oh and a forward fold. I love those.  Not to mention my job, I'm a cleaner, I asked her if it's ok to hoover as it's a repeatative movement and she said yes. 

Please could anyone clarify and info for me because I'm already being very cautious with the yoga but I'm missing it before the chemo has even begin.  I realise it's not a huge problem in the grand scheme of things but it is a big part of who I am.