BFN but no AF

My periods are irregular so I’m not quite sure when I ovulated but I think I might be around 10-12dpo. I’m having bad cramps, exactly like the cramps I always have right before my period shows up. But no, every day I’m waking up and nothing. I’m so tired all the time and i feel like a walking zombie 🙈 but my pregnancy tests are negative. Have anyone else experienced this and ended up being pregnant? Help a girl out and give me some hope. We have been trying for baby #2 for 1,5 years now 🙏🏻