Advice on severe allergies

Last week I went for a walk that triggered my allergies so badly. I had two days of just a sore throat, called the dr and they approved Claritin and throat lozenges. It didn't really help, I'm going in 5 days of sneezing and coughing, it's so bad my ribs are so sore. I've been Keeping hydrated, no fever, the worst is I'm practically peeing on myself all the time :( I'm at my breaking point, and I can't sleep from being 32 weeks and sick. Has anyone been sick like this, any suggestions to help me get through this? Please please please any advice would be so greatly appreciated.