Help ?!

So I’ve been having a lightly throbbing headache since Wednesday . My bp was 99/52 on Wednesday morning then Thursday morning it was 100/60 and today it was 112/68. I’m feeling low on energy and this annoying headache is going to be the death of me. Any tips of tricks to help? I don’t want to up my salt intake to much as I had preeclampsia with my daughter last year.