last period was September 8th-11th. please help

April
My last period was September 8th-11th and I'm getting negative on pregnancy tests. I don't understand what's going on. Could anyone please give me advice? I've been trying to conceive for a while now. I've had 1 miscarriage in November of last year. I'll post a picture of my tests that I took this morning with first morning urine. Please help