Sex is completely great till your own water breaks or cracks, or if your doctor states you should not perform it any longer!
Are you aware that heading in to labor. unless of course your infant and your entire body are set to look into labor anyhow. it can not gonna cause you to get into labor ahead of time. The factors why they recommend having sex to perhaps help provide on labor, are 1) whenever the girl has an orgasm, it leads to the uterus to contract, probably rousing early labor tranche if the time is right and 2) the hormones in the sperm may assist to make softer and/or dilate the cervix...again although, the timing needs to be right anyhow or else it is not gonna work
There is no hymen. There's only several folds of tissue all along the vaginal entrance and occasionally one can break if you dilate it. 80% do not bleed during first intercourse or feel pain. The folds heal and goes back to normal. It looks the same before, during and after intercourse. And no to the question.
Your Cervix
The semen does help to dissolve the mucus plug.
No and if you are referring to the hymen there is none. There's only several folds of tissue all along the vaginal entrance and occasionally one can break if you dilate it. 80% do not bleed during first intercourse or feel pain. The folds heal and goes back to normal. It looks the same before, during and after intercourse.
The doctor will give you eye drops to dilate your pupils during your eye exam.
Histamine
Almost all the veins and arteries constrict and dilate during heavy exercise. Even capillaries bring a flush to the face and skin by dilation.
A woman reaching her climax during intercourse varies for each person. Most women feel an increase of tension during intercourse and a climax releases that tension.
pain during intercourse
dilate
During exercise your muscles need more energy from respiration in order to contract. So your heart beats faster and the arteries supplying the muscles dilate (widen)
Yes!