I give up with testing..

Back story..We have a 7 year old and we tried for baby number two when our daughter was aged 3 which didnt work( ttc for 14 months) so i stopped as It put my mind set in a dark place, it made me so depressed... now that my mind set is getting better we decided to try again this year. Every month i get the obvious symptoms of ovulation. So i decided to try testing this month as its very new to me. Why arent they getting darker?. Am i doing it wrong? ( never done ovulation tests). I have the obvious cramping in my left side. But still getting negatives.. i dont want to be disappointed.. as most of you know ttc plays massively on your mental wellbeing. Im 29 this year... i also started taking prenatals this month too.. any advice is very much appreciated. Please be kind.