You are welcome here,
Bleeding in pregnancy
is very common but off course abnormal. Please relax & don' take too much tension as it can be counterproductive. As you are 36 you should find a good obstetrician for booking & stick to her/his advise. I think what you need the most is a visit to your obstetrician for review.
You should tell your doctor about all the symptoms & your wish for oral route for the prescribed medicine. I think your doctor would like to see your cervix
first before giving any further opinion. I think there is no harm in it, but you must discuss this first with your doctor.
Think positively & try to stay happy. Avoid exertion & stress
. Wish you all the best.