How long does it take to conceive 1st child?

Constaince • Trying to convince. Sex is hard work

So my fiance and I have been trying to have a baby since February. And ever since I have been having symptoms of Pregnancy right before my period. (Never happened before) and it gets my hopes up of actually being pregnant. But as soon as I take a test and get a negative my period starts and the symptoms go away. Maybe my body knows I really want a baby and is tricking me? Well it's not funny lol so I'm trying not to get to excited. Has anyone experience this before?

So I was wondering is there something wrong or is this normal and for my first is it harder to get pregnant?