Hi Berta, welcome to the forum.
Sorry to hear that you think your afib is back. Having no health insurance makes things tough. You are aware you can buy insurance at very low cost through the ACA (Obamacare), right? If that's still too much for you to afford, you probably need to be looking into Medicaide, social security, and things like that. You can't just forego medical care. You've got to figure something out here.
If your BP is high, that's not good because high BP is the mortal enemy of afib. BP meds are all generic and cheap. You need to get yourself into a doctor and get your BP back under control. Even if you have to pay for it yourself, it could be possible that getting your BP under control will turn back the tide of the afib that has come back.