It is really hard to give you any kind of answer for this. Your ob or midwife would be able to let you know by feeling the baby. Sometimes babies move up and down in their positioning. As you said she may have moved positions making everything feel different. Occasionally I feel like I have extra breath as the babies drop, but then they move up again.

Dont worry too much, babies can engage early and not be any closer to labour than those babies that engage at the last minute.

All the best.