Thought I was going to get a BFP but got AF instead

L

I thought this month would be it. After TTC for 4th month, including checking CM, OPK I was sure this was going to be the month we got out BFP for #2... until I got AF today. Feeling flat, frustrated and like I can't be bothered trying anymore 😞 just needed a vent. Any tips for TTC?