Allergies bum me out

I have allergies at weird times, right between seasons and rainy days...basically i think its that I am allergic to mold, but really all it does it make me exhausted on rainy spring days...and that is no way to feel on a day when its a struggle to have energy to begin with. Although my allergy medicine makes me a kind of ill, jittery tired...which is a bizarre feeling that I really could do without. I am trying to pull myself together as 9pm - 1am are usually my most productive hours of the day and I just spent the entire evening at my moms with two of my sisters, so I have a lot to do...and here I sit...in a stupor.