I doubt that it is anything to be worried about, but when you have a followup visit with your PCP, ask him or her what you can do to bring it up. If you don't have a visit scheduled, just call and ask him/her. Having low red blood cell count tends to sap your energy. I remember being seriously anemic a decade ago and I'd pant climbing a flight of stairs because there weren't enough red blood cells to carry oxygen. To some extent it just takes time, but you can help it along. Eat some rare steak a few times per week.
If you are going to have chemo, you definitely want to bring it up as much as you can before you start.
F, 64 at DX CRC Stage IV (or "3 1/2" per Dana Farber consult, LOL)
3/17/18 blockage, emergency surgery, r hemicolectomy
11 of 25 nodes
5 of 5 mesentery nodes, matted
0.5 cm sub-capsular liver met removed
pT3 pN2b pM1
Neg CEA, neg BRAF, KRAS G12D, germline mut ATM
dMMR, MSI-H, Neg for Lynch
Added Neulasta 6/28/18
7/9/18 CT scans show no masses or enlarged nodes, 2mm indeterminate lung nodule
11/20/18 CT scans NED. Lung nodule likely calcified granuloma. Enlarged spleen.