Weakness after SLNB

So I turned 40 and had a mammogram and what do you know, I have breast cancer! My mother had DCIS at age 60 but I was told not to worry that hers had come from hormone replacement therapy and was not hereditary so I guess it's an unfortunate coincidence that I now have it too. Fortunately, I've been blessed with a very positive attitude so I'm taking it all in stride knowing my battle is minor compared to many of you dear folks. Anyhow, after genetic testing came out negative, I opted for a lumpectomy which was my surgeon's recommendation as well. My surgery was Jan 11th and I also had an SLNB done. I'm not sure how many lymph nodes were actually taken out yet nor do I have results yet.

I was pleasantly surprised how little pain I felt in the following few days after surgery and thought I'd be up and running now, one week post-surgery. Well, around day 5 I started having pain and excessive numbness and weakness and also a kind of burning sensation in my lower arm. My right leg is also very weak. So weird! I wake up in the morning feeling pretty good and even though my activity has been pretty limited, the weakness gets worse as the day progresses. Has anyone else had this? I just took off the dressings today leaving only the steri-strips and so am very sensitive in both incision areas. Tomorrow will be one week since surgery and I feel like I'm getting worse instead of better! I know that there has to be some pain in the recovery process but just want to make sure these sensations are all normal.

Also, my post-op won't be until the 31st, 3 wks after surgery. Is that normal??

Thx in advance and well wishes to all!