Day 83 of my cycle?

Aleesha
So I have an irregular cycle no matter what but I've always gotten my period monthly it's just always been random. Ive been ttc since July of 2015 and now I'm on day 83 of my cycle. When I take pregnancy tests they come out negative I had a couple faint lines on two of them but the color was bleeding so I don't know if it was defective or not but every test I've taken since then has come out negative as well. My mom &sister also had this issue when they were pregnant and their pregnancy wasn't confirmed until 6 mo. By demanding ultrasounds. I'm wondering if this is a common thing? I would go to the Dr but I work m-f and my work is super strict about time off so it's a battle at this point. I'm trying not to get my hopes up because as we all know the let down is so hard to deal with. I think I just need some comparative insights because my mind is going absolutely crazy. I do have symptoms but that could also just be hormonal imbalance from not having my period right? I am going insane. Help.