I have urination issues. I just finish going and when I stand up I have an urgent need to go again?

I am a 52 year old white woman. I am 5’4″ and weigh 261 pounds as of this morning. I have COPD, Bipolar II/Depression, GERD, Throat and severe vocal cord issues, arthritis. My medication is fairly long, so here goes:

Bumetanide 1 mg tablet: 1 tablet morning and afternoon.
Low Dose Aspirin 81 mg: 1 tablet morning.
Escitalopram oxalate 20 mg tablet: 2 tablets morning
Gabapentin 600 mg tablet: 1/2 tab morning/afternoom, 2 tabs night
Probiotic (Dr. Tobias): 1 capsule morning
Lithium Carbonate 450 mg CR: 2 tablets nightime
Lorazepam 1 mg tablet: 1 tablet nightime
Klor-Con M20 tablet: 2 tabs morning/night
Lansoprazole DR 30 mn capsule: 1 morning/night
Pramipexole .0125 mg tablet: 4 tablets night
Simvastatin 40 mg tablet: 1 tablet nightime

Recently prescribed (10/25/16) for upper respitory infection:
Prednisone 10 mg tablet: 3 tablets in morning starting 10/26/16
Azithromycin 2t0 mg tablets: 2 tabs as soon as I got home, 1/day for 4 days

I am having increased urination issues. It seems like I just finish going and when I stand up I have an urgent need to go again. And I really have to sit and go again. Trying to sleep last night was awful. I can’t call my doctor at this hour and I really don’t want to go to emergency. I really think it is the prednisone, but I don’t know what to do about it.