Biopsy tomorrow

Hey all! Not happy to be joining, but am happy there’s a place to talk about this! This summer I began having some heart palpitations and a strange feeling, not breathing quite right. Also a very dry mouth! It didn’t happen regularly (other than dry mouth), so I let it go a while. Found out my thyroid was off and meds needed adjusted. Once the meds kicked in, I felt great for a few weeks. Then, started having some feelings of chest pressure again. Not sure that’s the best way to describe it? I went for my appointment with my GYN and she thinks it could be an autoimmune disorder, specifically Sjorens syndrome. She did a full work up of labs and I received the results today. CBC looks good, but Dr. Google tells me that’s meaningless with breast cancer. It does look like antibodies were detected for the autoimmune disorder, so that can explain a lot of things, I’ll find out next week. BUT she also found a lump in my breast. I’m 37 and check my breasts, but I can’t distinguish the lump from the other squishing as in my boob! Today I went for my very first mammo and ultrasound. It’s worth mentioning, I’m a day or so away from starting my period and also had my Covid vaccine last week. I did have some lymph swelling from that, btw.They were aware of all of this going into it. The mammo didn’t see anything and I was told I have dense breast tissue. The u/s showed a mass and they can’t tell if it could be cancerous or not. The radiologist said that the edges weren’t perfectly smooth, so that had him concerned, but there were “other things” that made it not seem alarming. Not sure what that might be. So, since it falls in that gray area, I’ll be having a biopsy tomorrow. To say that I’m nervous is an understatement! Totally scared and freaking out! After the issues I’ve had this summer, a possibility of breast cancer NEVER crossed my mind!