Deep Chest/Middle Pec Soreness

About 5 months ago I did some 5/3/1 and felt as if my inner chest was always sore. I recently have not made time to work, trading my time towards my busy life, and guess what? The soreness pain remains.

I have literally not pumped my tits in 1.5 months and I still have this strange soreness in my inner chest. If I press I can feel it. I have rolled, kneaded, pressure released and it remains. It feels like I constantly need to stretch my chest and I DO. I have not lost strength and it does not bother me when lifting.

Looking for any ideas as to what this could be. Thanks.

Bump* Help a brother out!