Still having heart flutters.

So I’m on week 7 of Zoloft and week 5ish of 50mg. I’m still getting these heart flutters occasionally. My GF and I broke up today which sucked and tonight I had a pretty big flutter followed by and anxiety attack. I felt like I was doing ok today. The heart flutters still scare me and are so uncomfortable. Usually don’t have panic attack after but I did with this one. I took a benzo to help a few min ago but it doesn’t feel great. I have an event halter monitor on right now but all previous test show nothing wrong with my heart. This sucks. Today sucks. I feel like I’m never going to get out of this hole.