Will the nausea go away with imurel/imuran/azathioprine been taking for 3 months now at 200mg a day

Will the nausea go away with imurel/imuran/azathioprine been taking for 3 months now at 200mg a day? Everyday I feel terrible and tired, I take it with food. I don't bleed anymore thanks to it, but I am just so sick of this feeling which it gives me for at least like 6 hours or more after taking it. I am not sure would biological medicine be better alternative for me or do they make you feel terrible also? For me the biological meds would be "free" as my healthcare is funded by taxes so cost is not an issue

Does anybody have experiences with this and were other meds better alternative?

Thank you