Mama, parang importante 'yan na i-check ng doctor mo agad, lalo na if may pain or unusual sensations ka, better safe than sorry at 18 weeks. A few of us moms have felt weird things during pregnancy, pero ang bawat preggie journey talaga ay iba-iba, so best to message your OB or go in for a quick check para ma-rule out kung normal lang or something that needs attention. Walang dapat ikompromiso pagdating sa safety mo at ng baby mo, 'di ba? Sending you so much love, hope everything's okay!