Shin fractures?

I've always known I've had bad shin problems with running. In highschool I got such bad shin splints from tennis that I was limping around all day and practice was hell. Fast forward 12 years and I'm 28 and giving running a second try after my shoulders went to hell from weightlifting.

I've run twice this week. Both runs were for 1.5 miles each. I ran at nearly the slowest pace you could call a jog. I never got out of breath and maintained my pace the entire run. I'm not landing on my heels as I run. So after these two runs spaced out over 5 days, I can already feel my shins hurting. I always thought it was a muscle issue but as I'm reading now, a very specifically located pain on the inside of the shin that feels better in the morning and is not effected by flexing my ankles upward, is likely bone fractures in the tibia? I'm relatively certain this is the issue.

Are there any ways to avoid this problem? My stride seems very low impact and I've only run twice. Is this an indicator of a guy that's never going to be a runner? I thoroughly enjoy running and really need this to work for exercise being my upper body is toast. I ran a 6:30 mile in 4th grade... I'd love to get back to those days...

Any help is appreciated.