TMI He won't Get hard

Sorry about the details is a little tmi but this afternoon my husband was watching porn and i kinda caught him.

So I see he's semi hard and i quickly wrap my lips around his shaft. He switches the porn from his phone to the tv. (i dont mind him watching porn!)

I go on and let him find the video that he likes and i start noticing he's not so hard anymore

I asked him "are you okay? " he responds and tells me that he needd to pee.. im like well then go. i keep watching porn waiting for him to come back. he came back and i told him to xhose a video. he does now im against the wall so he can have at it in my mouth. BUT with the porn and me jacking him and trying to give him a bj he still not getting rock hard. Now im like

He says he doesn't know why he cant get hard.. he ends up coming with a limp bj but i wasn't satisfied and im wondering why he couldn't get hard. Usually when i do give him head or handjob he is rock hard.. He did take xanies last night and a perc .. im thinking that could be the reason party too hard maybe?