Dear readers, it will not surprise you to hear that having suppressed my cell-mediated immunity with pregnancy and then knocked down my innate immunity with asthma drugs, when I get a cold... I feel very, very ill. Also, my immune system was a piece of junk to start with.
(Side note: Sometimes I hear people saying they want to take X - echinacea, elderberry, ginger, whatever - to 'strengthen' their immune system. It finally dawned on me why this thought gives me hives: how the hell do you know it won't just turn the whole shebang up a notch, rather than boosting your specific cell-based response to rhinovirus? Oh, that's right, you don't. Even fancy pharmaceuticals have a lot of off-target effects. Now imagine it's a plant..... I spend a lot of time and effort trying to turn down my immune system so it will stop, say, giving me eaten-by-ants feelings all over my body, so no, I don't want to try elderberry.)
I also stopped taking long-acting antihistamines because they cause lower blood pressure and mine was 96/59 this week. Plus, additional hit to immune system.
Sometimes I wish I knew less. Then I would feel less responsible for paying attention to what's going on, what the relative risks are, and what choice to make. "Oh, the doctor told me to!" I could exclaim cheerfully. Instead, well, at least nothing too weird has happened yet.