Betaferon injection areas

I am at second week of rotation and it`s terrible about these 48 spots you have to inject the drug. Do you guys inject every time in the area you have to? I mean before injection i have at least 30 min. of preparation - drawing on my skin with a pen the spot i have to inject the drug, combining the drug, measuring again am in the 5 cm left or center ... it`s really terrible and i have to do it every other day..... And the other thing - when i was at 0,75 rotation i was feeling allright next day, but now with full dose, i have, sometimes, flu-like simptoms whole day ... And one more - when i have injection i can`t sleep well at all .... Will it pass with the time?