Hi mama! Based sa timeline mo, possible talaga kasi yung Oct 29-30 ay nasa fertile window mo (around ovulation time for most cycles), so kailangan mo mag-wait ng at least 10-14 days from that contact before mag-test para accurate, mas safe kung maghintay til around mid-November para sure na ang result. Kaso since irregular ka talaga, mas mahirap mag-predict, pero common early signs like tender breasts, slight cramping, or fatigue ay pwedeng maging clue, pero honestly iba-iba per person at pwede rin yan maging PMS lang hehe! Best talaga is mag-home pregnancy test around 2 weeks after contact, or better yet, check with your OB para ma-confirm proper at ma-discuss din ang cycle mo, they can give you better guidance kasi irregular ka.