SC189 - waiting for ages

Hello All, I applied for SC 189 under ICT business analyst with 75 points. Lodged application on 5th Jan 2017, CO contacted for UK visa on 1st Feb and i provided it on the same day. However, since then I have had no contact and have been waiting without any updates. The agent says its showing "assessment in progress" but im beginnning to get worried. Any ideas on why it could be taking long or is there anything i need to do/ check? Many thanks!!