My baby has a cough....

Ba

My daughter is 18 weeks and she started coughing this morning at 2 am. Has been all day. It’s a fairly wet cough but she’s not coughing anything up. She will get into coughing fits and spit up (not a ton) saliva. We have a doctors appointment tomorrow morning but I wanted some advice tonight. She has no fever. I’ve been checking her all day. We used some Johnson&johnson baby bath stuff thats smells minty. It’s green I’m not sure what it’s called. It’s really sad and I hate seeing her sick 😢 what will they do for just a cough with no fever? Just make us wait it out? 👎🏻