Struggling

My boyfriend and I have been trying since Thanksgiving to get pregnant with zero luck. We are both in our early twenties so I thought it would be easier and it hasn’t been easy at all. My period is extremely irregular, it was a 32 day cycle then 28 and then 44 and I thought I was pregnant when I finally got my period and a ton of negative test last month. This month today is day 45 of my cycle, again negative test so I’m just waiting for my period. I don’t even know when to try anymore since my period is so irregular. A couple months ago everybody had babies and now a whole new group is all getting prettying and it’s really upsetting for us both. Any recommendations on how to get pregnant?