I Need Help With My Dogs Health?

My dog is an outdoor dog, the is a labrador retriever. We put skin so soft on her to keep the bugs off but it hasn’t worked very well with all the flooding and extra mosquitoes. She has many bug bites that have swelled up. What can i do to easy the pain of the mosquitoes bites and keep all the other diseases they carry from hurting her. I give her her heart worm pill every month. Is there anything i should be concerned about otherwise? If so what are the symptoms.