Hi guys, thanks for quick responses..
I'm just worried to plug my iPhone into iTunes on laptop as when I did this ages ago all my calendar data was wiped :-(
I'd be lost without it now as it has all doctors apps etc for my little girl on it and think it may be because my husband is using it too :-(
I haven't updated software since because of this issue.
Do I just set the Syncing tab on iTunes to Do not sync automatically? Would that allow me to backup my calendar safely?