My doctor told me at the time it is very common with multiples pregnancies to have bleeding. They never found a cause. The egg has to be removed, which can be done through an operation or with medicines. All is well and babies seem to be wiggling around in there just fine from ultrasound. She said that I just need to rest if there is more red blood, and brown blood is old and no cause for concern. My precious twin boys were born a week ago.
I think it is just par for the course with a multiple pregnancy.
First-trimester bleeding and twin pregnancy outcomes after in vitro fertilization.
Some women may even bleed at the scheduled time of their next period and may not know they are expecting. They usually restrict sex bc that will cause bleeding sometimes too It even was red blood a couple times. Around 1 in 5 pregnancies ends this way. Just watch for more red blood and keep your doctor informed.