Wife's period is 11 days late. What do we do?

Hello everyone. Wife and I are currently waiting for her period to start so we can begin meds for our first FET. However, she's 11 days late (cycle day 39) and we are both feeling worried and stressed. Her breasts have been tender and sore for a few days, but no other signs that she's gonna start. She doesn't have any infertility issues. What do we do from here? I just don't want her to feel stressed and guilty anymore. Thanks in advance.

Edit: we are a same sex couple (F&F)