Feeling Sad

It seems that everyone else is getting pregnant but me and I have been trying for the past five months but I’m not sure what it is I’ve been pregnant before( one daughter) and I’m only 31... I do smoke marijuana daily and drink occasionally... .. i’ve decided to go on a detox just to make sure it’s not me...I’ve been telling my boyfriend to go get checked but he hasn’t so I’m not sure if it’s him or if it’s me or if it’s both..