Is it okay to be upset about this?

Idie
So AF has been MIA since beginning of May, and even then it was super light. I've taken a few tests all BFNs. I'm not TTC at all, I'm avoiding until I'm financially stable enough. I realized that a lot of my issues could potentially mean I have PCOS, or something similar. If I haven't ovulated in two months, I'm assuming it's going to be very difficult for me to get pregnant when I eventually am TTC....anyways, I was really upset when I got the BFNs and didn't realize how badly I wanted children until right now. I'm sad that they were all negative and I'm sad that I may have something that causes me to not be very fertile...I always smile when I see kids and babies in public and can't help but walk through the baby aisle every chance I get, but I just feel like crying on the inside every time I see that stuff. I feel really emotionally hurt about all of this, but feel like I shouldn't fee this way since I know I can't afford to be TTC right now....