Hello JG and welcome to HealingWell,Krill oil is used for heart disease, high levels of certain blood fats (triglycerides), high cholesterol, high blood pressure, stroke, cancer, osteoarthritis, depression, premenstrual syndrome (PMS), and painful menstrual periods. As it is a supplement it would be wise if you check with your Dr. if your BP issue continues to be a concern for you.
I agree with SC, the amount of stress you have been under is certainly a reason for why your anxiety may be high. It is good to check you BP but also remember to notice how you are feeling physically when your BP is elevated out of your normal range.
My prayers to you and hope now that things have settled down after Sandy so will your anxiety.