Bit of a long one but not sure what to do! for the past 3-4 weeks I've had headaches/migraines daily I finally went to…

Bit of a long one but not sure what to do! for the past 3-4 weeks I've had headaches/migraines daily I finally went to the doctors yesterday after speaking to midwife and triage who said to contact GP there was no protein in my urine but my blood pressure was higher than usual. he spoke to the doctor he said there's nothing to worry about unless I'm being sick constantly or get major swelling which hasn't solved my problem as i feel to sick with the headaches to take tablets then today normal day had a headache it went but was baking with my son and all of a sudden felt like i was about to faint luckily I was sat down because I just felt so uneasy its been about an hour now and still have the feeling coming and going not sure whether to call triage but just feel silly as im sure its a normal pregnancy thing to feel dizzy?