Trying but not exactly working out

I have a five year old, and my husband and I have been trying to conceive a second child for over two years. The first time around it took us about 7 months so I figured that it would be around the same time for us again. Well, apparently not! What is frustrating is that my cycle is so unpredictable so we have to use fertility test kits. We try all the time and it is beginning to wear on me. I have cried many a time when my period comes. I think my body is playing wicked tricks on me now too because sometimes I feel like I've conceived, I will get the breast tenderness, feel tired a lot and nausea and then nope, still no luck. So rather than drive myself mad I am going to try to take a step back and ignore those persons around me who are conceiving left, right and center. It can be hard, I have been there and I know how frustrating it can be. It helps to know that there are other people who understand exactly what I'm going through. Hope you guys get your heart's desires soon. :-)