Depo shot

Tykeysha
So I heard that if you take the depo shot that you're more likely to get pregnant . It was explained to me that once you get the first shot its effective for 3 months . But if you only get it once you'll be more likely to get pregnant. Ive been trying and no luck . Then I had ny last period in July but all of my test have been negative. . . Any opinions on this or good advice ??? 😑 feeling lost here