Hello Miss_C and welcome to the Q&A forum.
Sorry to hear about the problems. I have a few questions that, when answered, may give more insights into what's going on.
First, when you're shooting close up as you did in the sample photos provided, were you within the minimum focus range for the camera?
Did you switch to macro mode?
Are you zooming in with the digital zoom? If so, the quality of images will be degraded. Shut off the digital zoom and use the optical zoom.
Most macro modes work best when you don't zoom in, particularly with a digital zoom. Shoot at the widest angle and move closer to the subject, rather than zoom.
Are you using a conversion lens? If not, turn off the conversion lens setting.
Try changing some of you settings and see if things improve.
Related reading: Digital zoomshttp://www.digicamhelp.com/camera-features/camera-parts/zooms/