6-7 dpo. When to test

Ok last night I had a really bad flushed face. Like really bad. I was so hot in my face but cold in my body. At one point I felt like my body was going to boil. Actually like I am right now.

My Dr prescribed me clomid and metformin to help me get pregnant. Are these symptoms of those or symptoms of pregnancy? I just bought 5 pregnancy tests and I'm not supposed to start my af until may 10th. When should I start testing to see if I can get an early bfp