Sick for weeks, need to rant!

So I've been sick for over 3 weeks with a horrible cold. There were 3 days recently when I felt like I was almost recovered and better, but now I'm feeling worse again. I already went to my doctor and took antibiotics (which I finished) so I don't feel like there's anything else I can do. I'm drinking lots of fluids, hot water with lemon, gargling with salt water, Neti pot for my nose, decongestant spray, humidifier with eucalyptus oil drops, vitamins. My body just refuses to get better! I'm so miserable and feel like I'm going crazy. I want to be done with this so I can start enjoying the 2nd trimester already 😩