Pregnant or something else?

Delaney

So I need some help. I have not had a period now in about 4 months, this is not normal for me, I've always had very predictable periods. However, I have taken 4 urine tests and even one blood test. They all came up negative. The urine tests were taken periodically threw the months I went missing my period, and the blood test was taken 3 months in. I dont know what could be going on. Help?