How do i go about it?

I m on the brink of giving up. Trying to get pregnant but just not happening. Did the calendar bit, ovulation thing, temperature thing and cervical fluid charts, but no avail. Been trying for nearly a year and fed up. Clock ticking. Doctor says calm down. But does "he" know how i feel??? I feel a failure. This month the abnormal happened. Got period on the 24th day. which is supposed to usually be the 28/29th. Felt pregnant tho. All symptoms and such. Period comes now as though hav been utterly butchered. What can i do to get pregnant and is it wrong to feel utterly like a bleeding failure??????