I am sorry to say, it does not sound normal.
Any signs of mets or lymph node involvement will require you and your spouse to seek another professional opinion. Not certain where you live, but most here would suggest a second opinion from a major cancer center like Dana Farber / Boston; Sloan Kettering / NYC; or MD Anderson / Houston.
If you share where you live others will chime-in for sure.
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