I am so bummed

So feb 1 I got a Bfp and then started bleeding on the 5. Then I had a spotting period in March.... then I am 3 days late and just started spotting and have cramps. I wish it didn’t make me soo sad. But I am. I have 3 healthy beautiful kids. I just hate feeling like I’m done when I don’t want to be.😭 I am gonna focus on these wonderful kids I have and try not to let the spotting hurt my heart.