Thank you millions everyone who has offered advice and replied to my many questions.
I just wondered one thing on my blood test result last week it showed a slight dip in the liver function part. The specialist said they will check again in a month as it's always perfect when I have a blood test and I have quite a lot! She said that it's probably due to having a nasty infection and that can affect it apparently so she told me not to worry and we'll check it again soon.
Does this sound normal, anyone else found that being poorly for some time throws certain other things out of sync?