I am sorry to hear of what you are going through. Make sure you use the search tool on the top left corner under the "quick links" tab. This will allow you to read all conversations related to your circumstances. Also, many on this forum, and I agree, say to get a second opinion from a major cancer center depending on your geographic location. ie: Sloan Kettering in NYC, Dana Farber in Boston, or Anderson in Texas.
I have heard, and have witnessed, that the second look from these centers allows for a patient's peace of mind that your local oncology plan is the same as the big city plans, and if not, you can decide what is the best plan to follow with the most recent advances in fighting this cancer.
D/H 47 years old, 10/2014, Stage IV M/CRC, nodes 12/15, para-aortic, 5 cm sigmoid resection, positive Virchow. KRAS mut, MSS, Highly Differentiated, Lynch Neg, 5FU/LV and Avastin 1 YR (Oxi for 5 months), Zeloda/Bev since 01/2016. 02/2019 recurrence para-nodes, back to 5FU/LV Oxy/Bev. It is working again. "...Perseverance is not a long race; it is many short races one after the other."-Walter Elliot