Yes its quite common.
During Puberty it is normal to be aroused by nothing inparticular and anything ! Getting aroused is something you will begin to control as you get older. It can be embarrassing for a pubescent teenager though. Try not to let it show.
yes
Just about anything can be normal. You have a lot of hormones being produced in overtime during the first trimester. If you are still concerned talk to your doctor. They will be able to help you better.
no you must go to doctor
It's not uncommon, especially in the first trimester.
Yes, it's more common when you are pregnant and especially during the second trimester.
During the first trimester, it is usually normal.
Fatigue is common in early pregnancy, usually fades during the second trimester, then may return in the third trimester.
Stomach aches is not normal but abdominal pains yes it is and only during the first trimester.
No, spotting after straining on the toilet is not normal in the first trimester. Any spotting or bleeding during pregnancy is not considered to be normal. While it could be implantation bleeding, it would be wise to get examined by your doctor or obstetrician.
Usually. Any swelling of the face with abdomnal pain or bleeding is BAD, call your doc.
It is normal to feel like you want to have sex on your period. A woman's hormones are going wild when on their period.