I CAN FEEL THE BABY THROUGH my VAGINA!!😳

Yana
So today I drank coffee from Dunkin (was supposed to be decaf but they miss marked it) and my body is feeling jittery  from the extra caffeine ...  I can feel fluttery all over and I'm laying down trying to fall asleep... My little girl is jumping all over the place like normal but today I can feel bumping against or on the inside of my vagina (sorry upcoming tmi-> ) ... I put my finger inside to see if I was feeling my own heart beat or just pressure or something and I could actually feel little hands or feet pushing against my vaginal  wall (not painful at all) anyone else have this before??? This is my second pregnancy and I'm 31 weeks along... 
UPDATE: had my husband check to make sure I'm not going crazy he can feel the baby too!!
UPDATE #2: went to the midwife today and asked her why I was able to feel the baby moving against the inside of the vaginal walls and she said when you have your second baby the muscles in there arnt as strong and they are also thinner so the baby is able to move enough for you to be able to feel her but there isn't anything to be worried about unless your cirvix  is open. And when you get aroused your cirvix moves up pushing the baby up more so intercoase is still ok to have 😋😄