Just Wondering if this could be a sign???

My fiancé and I had unprotected sex the beginning of my fertile week and twice in the middle where my fertility score was a 9.5 and a 8.5.. I've been realizing my daughter saying baby a lot around me more than she usually does. (She usually only says it when she sees a baby.. she's one btw).. yesterday in church I had my leg up so she couldn't get past me and run around during service and she kept poking my knee and saying "baby" and giggling. I searched online to see if babies could sense pregnancy and saw a lot of stories where women's children have sense their pregnancy. I have been cramping and having frequent urination, I randomly get tired out of no where, I feel pressure when I lay on my stomach and bloated when I put on anything besides sweats. I get nauseous here and there when I eat and I have been really gassy and constipated.. could these be signs? Could my one year old sense my pregnancy before I can??