Second surgery

Hi, Im wondering if anyone can offer any advice/support please. I got diagnosed with breast cancer at the end of February. We talked about surgery & radiotherapy as everything seemed straightforward. Just over 5 weeks ago I had a lumpectomy & 2 lymph nodes removed. Everything was going well until recently when at my follow up appointment I found out I now need further surgery to remove all the lymph nodes & take more tissue from the breast as well as chemotherapy. I’m devastated and wondering if I can actually do it all again. Although I’m only in my early 40s and fit & healthy, it’s been the hardest thing I’ve ever had to deal with.I’m really worried about developing lymphoedema after having all the nodes removed and obviously anxious about the future. Has anyone gone through anything similar that could offer any advice?Thank-you