Sick with a cold... how to get better fast/should I call off work?

I have two jobs, and with one of them being a waitressing job I have a very busy schedule on the weekends. It goes like:

Friday: office job 9am-4, waitressing 5-11pm

Saturday: office job noon-9pm

Sunday: waitressing noon-9pm

I hate calling off work, but with such a full schedule ahead of me I know I'll just make my cold worse. I'd rather take it easy for a couple days (today and tomorrow) so the cold blows by quickly. I feel like I should call off waitressing rather than the office job, since waitressing deals with food and stuff, but that job pays better than my office job.

What should I do about work? And do you have any tips to get over a cold quickly? I've been staying in bed all day today (I'm waitressing tonight, so if I call out tomorrow they'll know I'm not making it up), drinking TONS of water, and took a couple zinc losenges.
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I went in to work tonight and got sent home after 20 minutes hahaha. Now just what to do about tomorrow.
Updates
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Well, yesterday (Friday) I had no sleep due to an overnight fever, so I worked a partial day at the office and called off waitressing. I'll probably work the rest of the weekend as usual. Feeling okay now except for some coughing and congestion.
Sick with a cold... how to get better fast/should I call off work?
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