Hi Ken,
Basically you have two main strategies at this point. One is to boost the immune response, which the Wei Qi Booster may due for you. The second is to take an anti-inflammatory approach to dry up the secretions. If they are profuse, I'd probably start there. An Astragalus-based formula like Wei Qi Booster may work against you in that instance, since it revs up the immune and inflammatory responses, which might already be too strong if secretions are profuse. If, on the other hand, they're mild, you can just try the Wei Qi approach first.
If you decide to dry things up, options include Euphrasia (a western herb, also available in homeopathic form) at a dose of 0.2 ml of tincture per 5lbs body weight BID - TID; Cang Er San (Xanthium seed Combination) if the secretions look purulent; or San Ren Tang (Three Seeds Decoction) for a general across the board respiratory epithelium drying and anti-inflammatory effect. You can use the Euphrasia with either of the latter two formulas.
Hopefully this is enough information for you to decide what to do.
Good luck!
Steve