Hang in there…I know it’s really a bit scary when you’re not seeing any improvements. The goal of that chemo is to knock down the cancer cells in the blood. Unfortunately it also knocks down the other blood cell numbers too and it can take a while for them to all regenerate. Sometimes it’s fast enough to be on a set schedule of every 28 days. But like your doctor said, it can take 6 or more weeks.

The antibiotics are acting, in part, as temporary immune system while yours isn’t up to par right now. If you have the stem cell transplant, you’ll be on antibiotics, an antiviral and anti fungal medication for quite a while until the new immune system you acquire from a donor matures and is robust enough to protect you. Sounds like a lot, but it wasn’t bad and you get used to it.
Are you having any side issues with the antibiotics? Are you eating any yogurt or taking probiotics? (Yogurt should be eaten at least 2 hours after you take it or 3 hours before ).