Ay, yan ay pretty normal sa pregnancy actually! Ang pempem natin ay maraming changes habang umuusad ang pregnancy, hormones, blood flow, lahat yan nagtutulak ng expansion at sensitivity sa area na yan, kaya totoo na sometimes may unusual sensations na parang hilam or pressure talaga kahit walang pain, lalo na kung lumalaki na ang baby bump mo at nagbabago ang weight distribution. One of my mum friends din nag-experience nito around same stage, and by the time nag-deliver siya normal lang lahat ng nangyari. But since meron kang concerns, better to mention it sa OB mo next week na lang para ma-rule out anything at may peace of mind ka, okay? Walang hassle yun, quick lang check lang yan.