If you notice it get's a little jumpy then cut down holding it a bit. start with just putting your hand in the enclosure and getting to know your hand. take baby steps if anything. it's all up to the gecko's reactions that lets you know if your holding it too much. some love being held, some...
Could very well be overfeeding... One of my juvies goes absolutely nuts when eating and she tries to inhale all the mealies asap, lol. I found she threw up one night and I have since cut back on giving her larger portions and give her smaller portions at a time now.
So I have one of my females acting weird... check her belly out and she's ovulating. Put my 3 and 1/2 year old male in with her and he did his tail shake. Then started biting and not even 5 secs later, he just stopped. I been trying to mate these 2 for a week now. He doesn't seem interested...
I just use Microsoft Excel. I have 3 seperate spreadsheets. One for gecko records like morph, d.o.b., hets. One for their weight records when i weigh them once-twice a month. The other for breeding records.