Itching Top Of Head, White Bumps. Applied Anti-itch Cream. Help

i woke up in the middle of the night with just the top of my head itching really bad...i have never had this before..the night before we were sitting around a camp fire but i had sprayed myself down with Off really well..these feel like mosquito bites and itch worse but my husband say they look like white bumps but they feel like they should be red and bloody after i keep itching them... i did rub some anti itch cream into the top of my scalp and it helped but when i washed my hair this morning i was right back to where i started...very itchy..seems like more and more are appearing but just at the top of my head...