What to expect when taking injectible methotrexate?

Hi,

 Though I have been on methotraxte for a long time now, I have always taken it in the tablet form, and have been pretty OK with it excepting the nausea the whole of the next day. But since I started to actually throw-up soon after the tablets since the past few weeks, my rhuematologist suggested I go in for the injectibles, which I am to start this coming saturday.

I would like to know if any of you here take or have taken methotrexate as an injection and if it has helped control the throwing-up and nausea. Alos, I am worried if it will not cause more serious long term side-effects on the liver and blood counts as injections are more potent than tablets.

appreciate your comments on this!