Ah sis, naiintindihan ka namin, ang worry talaga pag may ganyan, lalo na paulit-ulit! Since your OB has already checked you at walang problema nakita, that's reassuring, pero kung concerned ka pa rin, totally valid to ask siya specifically about what tests pwedeng gawin to rule out anything (like a cervical swab or detailed ultrasound) para sa peace of mind mo. A few of us moms din nag-experience ng similar spotting during pregnancy, kaya hindi ka nag-iisa, pero yung pattern mo with the constipation connection ay worth discussing directly with your doctor para sure na lahat checked thoroughly, they might have other insights or tests based sa full picture nila ng case mo.