What should I be feeling 10 weeks to go in third baby???

Hiya so for weeks I've have sore back bum legs extra discharge and it's my smallest bump. Persuned growing pains and running aorund after other two. Very parniod after missed miscarriage in last pregancy. What way should I be feeling or what way are ye feeling? 
Im sore and feeling like im going to go into labour early.
Any advise or just chat please