Ay anak, two months delayed is definitely worth checking with a doctor ASAP para sure na kayo, take a pregnancy test muna at least, or go straight to your OB if you want to be certain agad! Yung loob-loob pain could be pregnancy or marami pang iba, pero hindi ako magugues kasi I'm not a doctor hehe, kaya go na lang sa clinic para makakuha ng peace of mind and proper check-up.