how many times can your husband..

baby dance successfully in a row? my Husband and i have never really done it for days on end but sometimes back to back. we're ttc for a year now with no success(we already have a daughter so it has happened for us before) but the latest time, a couple days ago it was my peak ovulation time and he freaked out, we had sex on ovulation day and then he said he couldn't again, he said he felt empty and like he couldn't come again and yhats its stressing him out and hes sorry. he wants yhis baby more than i do and hes pushed us to ttc etc so its notbthat he doesnt want a baby. he says its also because hes tired and over weight that things have chaged for him... is anyone else like this? i always see on here people having sex days on end and i know its just not possible for us.