Depression rant

I’m 20 my hubby is 22, we have been trying to have a baby for 11 months now. I got off the Depo shot January 13th, 2018 & have literally been trying sooo hard. I don’t understand what is wrong with me, & I’ve went to my doctor and he tells me to just keep having sex...we have & honestly it’s just upsetting every time I see my friends get pregnant or my family & there I am with my BFN. I’m losing all hope & just constantly crying about it because I just want a baby of my own. I have 7 siblings, my hubby has 4 & we just want to start our family we’ve been together for 5 years now, we have our own house, cars, good jobs I own an awesome business...I just want a baby, I don’t care about anything else. I already have depression off and on now it’s just consistent can anyone help me or give me advice I just am about to give up I don’t know what to do anymore 😞😞