If it ain't one thing it's another, I have strep throat. Any lactation experts out there?

Dang it. I have had a sore throat for the past 3 days accomodated by a mild fever. I finally decided to go to a doctor yesterday and learned that I have strep throat. Why in the world am I the only one in this household that gets sick all the dang time? It's so weird. I have kissed everyone around here and shared food/drink over the past week and still no one else has caught it. Isn't strep supposed to be highly contagious? Don't get me wrong, I am glad that no one else has it but it is so strange how I seem to be the only target. So now I have had a uterine infection, mastitis, numerous colds and strep throat over the past 9 weeks. What's next-swine flu? I am now at a breaking point and I cannot take it any more. I need to get healthy again. Could lactating keep my immune system down just like during pregnancy? It sure seems that I have been on tons of antibiotics since having baby girl. My milk has taken a hit each time that I have to take meds so I am really frustrated at this point. Yesterday's pumping sessions ended with a noticeable drop in production. I am beginning to think that I need to wean but I hate to do that to baby girl. It's just getting too hard to keep up an acceptable amount of milk when I keep getting sick. Is there anything I should be doing to keep my immune system up or will I just have to stop lactating to build my immunity back up? Any advice??