Is pain, heaviness and palpitations in the chest normal with implants? Had heart checked. I've had saline implants for 8 yrss.

the pain felt like mastitis.no red hot spot, breast looked normal.been getting palpitations,(feels like mastitis goes away in a few weeks)it's hard to see my doctor.by the time my appointment comes around there is almost or little pain.In the last three months I have had attacks where it feels like I can't take a breath in and that something very heavy is on my chest.2 mins. to 2 hrs.I have an appointment booked,but not for another 3 weeks.Should I go to the walk in clinic?