Periods while breastfeeding

Me and my husband aren’t trying and timing for a baby more like if it happens it happens. I have had periods while fully breastfeeding since i had my daughter. I have missed maybe one or 2 periods but for the most part i have a normal period. We often have sex while I’m ovulating but i haven’t got pregnant yet. I haven’t talked to my doctor because it’s really not a big deal since we aren’t exactly trying. But my daughter is now 13 months old and I’m still breastfeeding every 3-4 hours and during the night. Do you guys think I can get pregnant right now or no? TIA! Tell me your experiences!