Brother I am not sure about timeline for VISA (sometime it takes 7-8months to get medicals) but as you have AEO it may take longer as CIC is getting in to deep investigations for all AEO cases. So be patient they will get back to you with medicals if everything is genuine and their investigations are positive.
I would suggest you to work more on your language skills as 5.5 is very low score and looking at your paragraph above you will realize how many grammatical mistakes you have made. It will be a big block for your settlement and you wont be able to get a good job with this level of language skills.
I would recommend as you are a graduate you wont have much difficulties in enhancing your language skills, so by the time you get visa just work hard to get your language enhanced.