FTM with teething baby HELP

Amanda • 𝑀𝒶𝓂𝒾 𝒹𝑒 𝓟𝓻𝓲𝓷𝓬𝓮𝓼𝓼 𝓔 𝓎 𝓑𝓮𝓫𝓮 𝓚 ♡ . . ♡ 𝟘 𝟙 . 𝟘 𝟙 . 𝟚 𝟘 𝟙 𝟡 ♡

What can I give my baby girl (3 months) she has been nonstop crying and won't sleep longer than 20 minutes... I'm so overwhelmed and stressed right now. What can I do?? :(((