coffee while pregnant..? so tired help!

Hey there! I'm 7 weeks/2days, and I'm more tired now than ever! I never really thought I was out of shape but I'm out of breathe so easily now. I was wondering what people's opinions are about coffee? I've read so many different things. I've heard one cup is okay and others have said zero caffeine! How else are you guys getting an energy boost naturally? πŸ‘ΆπŸ½πŸ˜πŸ‘πŸΌ