Changing Meds

I was first on Keytruda and a Chemo for 15 treatments. Two CT scans done after the third and sixth treatment showed the tumor shrunk but after the 15 treatment and another CT the tumor grew a some. So as of last week 8/08/18 I started on a Chemo pill twice a day. I'm feeling bad have nausea diarrhea and fatigue. I've committed a few times. I was so lucky with my first treatment I never had nausea or bathroom issues. This is going to be very difficult. Nurse practitioner gave me anti-nausea and diarrhea prescriptions. I tried to tough it out the first couple of days but after going out to dinner with my hubby last night And vomiting outside of the restaurant I took a nausea pill today. It did help some. I'm so tired and down right now but I'm trying to get adjusted to the new meds. I will have another scan in three months.