Severe back pain and headache early pregnancy?

i am early into my pregnancy approximately between 4-8 weeks (havent had scan yet) all yesterday i suffered from a severe headache ALL DAY and today i was completely bedridden with lower and upper back pain, nausea and constant headache all day i did take 2 very strong pain relief tablets to which did hardly anything. This is my second child however i never had any type of morning sickness or any of this occur with my first, i was wondering if anyone else has experienced this in the first trimester and is it normal