Excessive crying

Hello fellow mommies, I need your kind help (if you experienced similar encounters) my LO has been crying excessively when the clock strikes 7pm and it will last till 9ish pm most of the days. It might be witching hours or colic, I'm not too sure... but it tires all of us out ... we take turns to soothe but it's so high pitch... We tried bringing LO downstairs for walks but he cries even harder T.T What should i do #firsttimemom #advicemommies