I'm pregnant but i have chlamidia i have two pills as one dose but i took one earlier and forgot the other in my sisters car can i take it tomorrow?

Start over tomorrow: Probably it would work if you took the second pill tomorrow. However, this has not been studied so its effectiveness can't be guaranteed. If you were my patient, I would advise starting over tomorrow -- i.e. to take the full single dose (1 gram). Call your doctor and discuss the best approach. Best wishes for a successful pregnancy and for your growing family!