Normal talaga yan at maraming pregnant moms experience it, isa sa common complaints actually, especially around your second trimester dahil sa hormonal changes at increased blood volume. A few of us nag-complain din nito, and isa sa mga safe remedies is rest, staying hydrated (super important talaga!), and cold compress on the forehead, pero if it's severe or may kasama pang vision changes or swelling, better check with your OB para sure lang dahil may ibang factors pa na pwedeng mag-trigger. Sending you comfort!