I had a heart ablation for history of irregular rhythm in 2016. I have an artificial mitral valve and keep my Coumadin level between 2.5-3.5. I take 12.5 mg Metropolol Succ. daily. My heart beats in 80 s. Normal BP was 120/70. Started taking Zoloft 25 mg for anxiety Dec. 2017 along with Metropolol. March 19, my blood pressure was 150/80. March 31 it was 140/80 and my pacemaker showed a faint irregular beat. April 1 and 2 I have had off and on irregular beating with BP running from 128/80, 124/93,123/76, 142/84 to 158/90. Heart rate in 80 s to 109. I read online that taking Zoloft can increase Metropolol action and that Metropolol can increase Zoloft action. I have noticed that I have to take Zoloft early in day or it keeps me awake at night. I took both in the am today and do not feel at all sleep tonight at bedtime. Please advise.