Omega-3 fats....question?

Im hearing a lot about it. Not sure the best way to take it though. I hear about fish oil, flaxseed oil..etc. pros and cons on both. Not sure which is most effective for heart health/ high blood pressure. I'm 21 year old female that has inherited high blood pressure. I eat decent, exercise but still have it and truly do not want to be stuck on bp medicines yet. Help?