Wonder if anyone can help with this medical query?
I'm training for a marathon in October. I've been running for about 3 years but only short distances apart from a half-marathon I did in 2008 and the 3 peaks in 2009 (kinda related).
I can currently do about 6 miles comfortably, probably 10-13 at a push.
Last night I pushed myself a bit harder and when I got into bed on the night I could feel a slight pain from my heart with every beat. Not related to breathing or anything else, just every time I could feel my heart beating, I could feel slight pain from definitely my heart with it.
I've previously had ECGs and two 24 hour ECGs for heart palpitations. They've never found anything wrong, it seems to come and go with diet, so I found if I'm not stressed it lessens the occurrences and it seems to be quite a common thing anyway. They two did blood tests last time, they reckon neither showed up anything (I assume Cholesterol, diabetes, etc.)
I've had this slight heart pain before and it seemed to be when I'm eating less / less sugar during the day, go for a run and just before I go to sleep it happens.
Now, to improve muscles you have to damage them for them to rebuild stronger. The heart is a muscle so you'd reasonably expect to get some pain after pushing yourself hard. But every single bloody web site just goes straight for the alarmist 'Call 999 now!'. Oh yeah, when resting my heart rate is really slow, about 48-50. Apparently this is fine with no other symptons...
Any thoughts?