Chances of pregnancy had sex 1 day after period. condom broke, he said he didnt cum, not on birth control, took the morning after pill 5 hours later?

Unlikely: Sexual fluids containing sperm are often released before the "main load".You are less likely to be pregnant when dealing with early seminal fluids but it only takes one sperm & all the pre-cum fluids will have some. Pregnancy has been documented on any day of a woman'c cycle including during menses. (rarely) Your EC will remove that risk.