Better message your OB or pacheck-up ka na ASAP. Pitik or pulso at 10 weeks is just your own heart pulse. Di mo pa mararamdaman talaga si baby unless 20 weeks pataas ka na. If may pain sa lower abdomen mo during first trimester, better go get it checked. Possible rin na nagaadjust lang katawan mo and nagsstretch in prep for the baby. Pero regardless, better if may pamparelax ka ng muscles.