Help with Seroma

Hi there
Its been 10 days since I had my surgery - local wide excision and removal of all lymph's. I had the drain removed after a couple of days because it had blocked and this released 40ml of fluid within the immediate couple of hours following but nothing since.
My breast seems to have filled up again and my armpit is very sore - I keep being told this is normal!
Can anyone advise - will my body regulate this fluid naturally over the coming days or should I consider further drainage?
What has been your experience?
I'd really appreciate any thoughts - and yes I know that we are all different!
Thanks for taking the time to share