I really don't think they should have sent you home.
I am not trying to scare you but I lost my daughter to uterine rupture and placental abruption.

here is info copied from better health website:


'Placental abruption in pregnancy means the placenta has detached from the wall of the uterus, either partly or totally. This can cause heavy bleeding in the mother and can starve the unborn baby of oxygen and nutrients. The condition is also known as placental abruptio or abruptio placenta. Symptoms include bleeding, abdominal pain and frequent uterine contractions.

Symptoms
Some of the symptoms and signs of moderate to severe placental abruption include:

* Bleeding, most commonly noticed when the woman starts bleeding from the vagina
* Continuous abdominal pain
* Continuous lower back pain
* Painful abdomen (belly) when touched
* Tender and hard uterus
* Very frequent uterine contractions
* Foetal distress – for example, abnormal heart rhythm.

Treatment
All cases of suspected placental abruption, regardless of severity, should be closely monitored to protect the health and safety of the mother and child. This monitoring is usually done in hospital and should include regular checks of the vital signs of both mother and baby. Treatment depends on the severity of the condition but may include:

* Mild cases, earlier in pregnancy – if the baby isn’t distressed and if the vaginal bleeding stops, you may be allowed to go home and rest. See your doctor for regular check-ups and if your condition changes.
* Moderate cases, earlier in pregnancy – you may need to stay in hospital until the baby is old enough for the doctor to safely induce labour. The doctor may recommend medicines to help the baby’s lungs mature more quickly prior to birth.
* Mild to moderate cases, later in pregnancy – at 36 weeks’ gestation or more, the doctor may recommend delivery. A vaginal birth may be possible. However, if the placenta separates further from the wall of the uterus during labour, the doctor may switch to immediate delivery via caesarean section.
* Severe cases – immediate delivery is the safest treatment. The mother may require supportive care. Heavy maternal bleeding may be treated with a blood transfusion or emergency hysterectomy or both.

I personally would insist on been in the hospital, and tell them, the consequences are on their heads if they refuse to admit.

Thinking of you,