Pregnancy

Allah says in Quran ( And your Lord creates whatever He wills and chooses, no choice have they.) 28:68.

When the zygote is formed, it means that it was created by Allah, so, no one has the right to terminate the pregnancy. Your husband has no right to kill this embryo by abortion. You need to tell him that he  should not object on the Wisdom and Mercy of Allah which created this embryo. No one knows what is the future of this child but Allah who created it.

Abortion is type of killing of a human being and it is a major sin and has a penalty called  Diyah like the penalty of killing. The only case in which abortion can be allowed is when the life of the mother is in danger because f the pregnancy and there was no way to save the life of the mother but only by abortion.

Wassalam.

No need for Ghusl in this case and even it does not harm your fasting. Inserting medical device inside the body does not mean Janabah, so, it does not invalidate your purity and does not need neither Ghusl not Wudhu.

Wassalam.

This discharge during pregnancy is not menstruation. It can be what is
called Istihadha. During Istihadha, females must perform Salaah but
she has to perform Wudhu for every Salaah if the quantity of the blood
is small. But if the quantity of the blood fills the whole pad, then
she has to add one Ghusl in the morning before morning prayers and one
Wudhu for every Salaah. If the quantity of the blood is too much that
it not only fills the pad but it leaks out then three Ghusls will be
obligatory - one before morning Salaah, another before Zohr and Asr
and third before Maghrib and Ishaa Salaah.

Wassalaam.

No, we do not have such rule preventing pregnant woman from visiting graveyards.

Wassalam.

Child does not belong to the father only but belongs to both father and mother. Father is fully responsible for all livelihood expenses of the child and the mother, while mother is not responsible to spend on the child even if she is rich.

The Prophet Muhammad has ordered every one to look after his mother, his mother, his mother, then his father.

In the unfortunate situation of separation between father and mother, mother has the right of custody during the childhood years ( 2 years for boy and 7 years for girl) then custody will be for the father.

Wassalam.

Iddah is the waiting period which must be observed after termination of marriage whether permanent or temporary , or death of the husband. During Iddah she will not be allowed to even talk about marriage or receive proposals from other men.

Iddah is two types:

1. Iddah of Talaq or after termination of temporary marriage provides confirmation that the woman does not have in her body from her husband, not only pregnancy but any remaining from sexual intercourse. This Iddah is three menstrual periods after Talaq, and two periods after temporary marriage. If the wife is pregnant, her Iddah will continue till the end of the pregnancy. There is no Iddah if the marriage was never consummated ( No sexual intercourse at all) or if the wife is old enough that she has no menses.

2. Iddah of Wafat, which is obligatory after death of the husband in any type of marriage and it goes on till four months and ten day after wife is informed about her husband’s death. If the death news reached the wife late, her Iddah time starts from that time not from the real date of death. Iddah of Wafat shows the respect which every wife should show to her husband, that respect which makes her more respected in the society. In some ignorant societies, they look to the woman who lost her husband as vulnerably low standard person. Allah ( SWT) wants her to be always respected 

Wassalam.

No, she can not. 

If a pregnant woman is divorced or her Mut'a marriage has finished or terminated, her Iddah (waiting period) goes on till the end of her pregnancy. She will not be allowed to marry any one else before she delivers her baby.

Wassalam.