Benadryl safe while ttc?

Kylie
I have horrible seasonal allergies! The only allergy medication I can take is Benedryl... is it safe for me to continue to take a half pill or 1/4 dose every evening? If I was to learn I was pregnant I would of course stop immediately! But I want to know if it is okay to take while ttc?   I honestly have the most horrible allergies ever.