COFFEE

I'm a first time soon to be mom and 9 weeks pregnant . I work in a BPO company. My way of staying awake is drinking coffee. I mostly drink 3 in 1 coffee since it's more affordable. Sometimes frappes. I was advised by my mommy colleagues not to drink coffee but my OB did not mention not to drink. Is it okay to still drink coffee? Sobrang nag ke-crave na po ako sa coffee na halos iniiyakan ko na siya ?