I know etiquette-wise, if you send a person a STD, you have to invite them. I gave all of my coworkers STDs. Since then, I had a baby and was on maternity leave. Due to severe postpartum depression/anxiety, I extended my leave for 3 more months. My wedding is 7/2 and my leave is extended through 8/1. It seems weird to invite them at this point. Not to mention, our finances are a lot tighter due to my extended leave. Would it be wrong to not invite them? If I don't invite them, how do I explain it??