Yes, me too, not counting the lymphoma , which was very well hidden - I had no symptoms whatsoever, felt completely normal, and it came up on a mammogram - turned out I was stage 3 and had no idea. I had a pretty easy time with chemo as well - no issues with nausea or vomiting (the anti-nausea drugs they give you are really great, even though they make you a bit headachy/sleepy). After the 6 month treatment course, I was back to normal. I've always had great BP, low cholesterol, great bloodwork on my yearly health physical for insurance, and I've always been pretty active (I'm a very busy Realtor, married with two sons and I'm always doing one thing or another). To be sitting around not able to work for the last 3 months has been driving me crazy! I hope your dizziness and tightness will ease soon - thank you for your response 🙂