I am getting intermittent chest pain in centre just below the breasts which is not severe and doesn't occur while doing some activity or pressing on the area ..it simply occurs anytime from inside and lasts for a second...one doctor suggested me its costochondritis but it feels same as earlier even after take medicines for 3 days(nucoxia 90, hifenac, pantodac40). I recently recovered from covid in home isolation. Bp is also bit low ,around 100/70.