What is the best way to secure a first date/hang out with a girl in the future(2-3 weeks) if she is hot on you now?

Can you just say that you have a lot to do and that you will be very busy for the follow weeks BUT that after that you will be available?

I’m not abroad or out of town, I’m just a moron so I’ve caught an STD and my antibiotic treatment will start this monday.

Thanks