What do I do? Please don't ignore me 😢

Me & my SO have only been trying for 3 months with no luck! I am 36 days late but all the tests are negative 😢 my period has been irregular ever since I had a miscarriage 2 years ago! I'm terrified that I won't be able to have kids anymore 😞😞 I've been taking prenatals every single day, what can help me get my period?