Tired.

I am so tired of trying.i have a 6yo girl and for the last 4 years i am trying for a second child.i had so many chemicals i finally decided to visit a fertility specialist .i am positive in thrombofilia, i also have medium quality eggs.i am 40 yo.they said to do ivf.i don't want to.it is way too much expensive here in Greece and also really hard on the body.i am already a mother to a wonderful child.but i feel i am failing my husband.he and i really wanted 3-4 children but with all these problems i feel i will do it for nothing.i don't know if it is selfish but i feel so tired of all the trying and the bfn's that i don't want to go through all these and get another bfn.i feel heartbroken and sad .i just want to stay in bed and talk to no one.am i depressed or is it something that will go away????i don't know what to do