Your first clue... would be the absence of your normal (expected) period.
3 weeks.
yes
big stomach.
After a while since you are pregnant. you will notice that you put on weight, and you eat more , your nipples are firm.
You should put a Molly in a breeding box about 4 and a half weeks after you notice that they are pregnant.
It is possible to be pregnant if you are still having your period. Its not unheard of for women not to notice until they are well into the pregnancy.
You should be able to notice her stomach and nipples enlarging.
2-3 weeks
a female Betta is always pregnant!! But u will start to notice vertical lines on its body like this!!!!!!!!!! not like this ---------. if they are horizontal then your fish is stressed out
Sign of pregnantcy in a hamster are laziness, eating large amounts, and staying with the Daddy
Yes the very early miscarriages is something women might not notice.
female dogs can get pregnant as soon as they start going into heat. You may notice small spots of blood on the floor, in the snow etc. That is from your dog having her period, from this point on she can become pregnant. I personally have had a dog that got pregnant at 7 months had her litter and got pregnant right after.