I am so sick of being sick...

So I haven't posted yet-kinda nervous. But I am so sick. I have always have a crap immune system. And anytime I get sick, I also end up with a raging sinus infection (oh, you have a cold? Here's a sinus infection too. Flu? Have a side of sinus infection. Weather sucks? Celebrate with a sinus infection! You get the picture). It's always been this way. With that being said, I also teach special Ed where no one ever washes their hands enough and I get coughed on, sneezed on-hell one time I had a kid cough right in my open mouth-ended up with strep out of that one (with a bonus sinus infection). I am so sick right now with migraines, all-day sickness (I refuse to call it morning sickness because that is a LIE) and now I have this cold/sinus thing and I'm just miserable. I don't know what to do because my Claratin isn't cutting it anymore and I don't know what to take. I've been through 2 big boxes of tissues in 2 days. I sneeze every five minutes. I hate to keep taking pills but I just don't k ow what to do...