i feel guilty

Some of u might say im doing a wrong thing etc but i recently found out im pregnant im 5 weeks today...I am a heavy coffee drinker and i tried not drinking coffee since i found out and ive had horrible miserable headaches like non explainable headaches to a point ive cried.My mom drank coffee with me n my sisters both my sisters drank coffee during their pregnancy and they all had normal healthy babies.I gave in today and drank coffee ☕️ and boy do i feel better.Just one cup i didnt over do it and i know alot of things i eat or drink during day has caffeine in it already but drinking actually coffee makes me feel guilty.Has anyone not been able to give up coffee? and i hate decaf! I am Armenian and coffee we drink is pretty stong so i know its not healthy but i just cant help it