How Should Smile Bumps Like Bruises On The Leg Be Examined And Treated?

I have had a very recent event. I took a pillow from another room to sleep with. I used it to support my legs while sleeping on my side. I have had small, what looks like bites followed by bruising around those areas. I went to throw the pillow away and I felt like my arms were getting attacked by noseums... sorry sp. It just startded do I call an exterminator or a Dr.