It is important! my doctor is the same way, i got him to prescribe to me anyway. spotting is a sign of low progesterone. You can get natural progesterone cream at the health food store, that is what i was going to do if he said no. It is a good sign that it went up to 15, but ideally it should be over 20. Ask your doctor.
I went for my first appt at 5 wks 4 days, my doc did bloodwork. My HCG was 8,526 and my progesterone was 12.7. My doc did not do repeat bloodwork, I am now almost 16 weeks along and everything is fine. With my last pregnancy I had my first blood draw at almost 7 weeks exactly My HCG was 61219 and my Progesterone was 12.5. I didn't have any supplements for that pregnancy and he is now a happy healthy 19 month old.
My numbers where the same and I had some slight bleeding and come to find out that my progesterone was low. My fertility doctor was very concerned and but me on suppositories and after 10 weeks I stopped them and haven't had any reoccuring problems... I think that if you feel like you need them then you should insist on something to boost it!
My doctor said anything above 10 is just fine. Suppositories won't help you. If you are going to miscarry, it's going to happen whether you're on progesterone or not. More than anything, progesterone aids in the luteal phase. Now that you're already pregnant though, it's not really necessary. And your progesterone is over 10, so you're fine.
I do agree with nickie, if you feel concerned you need to discuss it with your doctor. As you can see, it can go either way.
My OB is good with anything over 10, preferring over 15. She said that the additional progesterone can also just add unnecessary side effects. Regarding miscarriage, she said exactly what Julii did above.
I would rec asking for progesterone meds. My sister had low progesterone levels in both of her pregnancies and her Dr refused to give her anything and as a result both of her kids have lax ligaments in their legs which the pediatrician and physio have attributed to low progesterone levels in her pregnancies. Her daughters are both had physio twice a week, had to wear special shoes, didn't crawl, or attempt to stand till they were almost 18 months old =, and that was only after intensive physio. My niece couldn't brace herslef to stand and screamed bloody murder whenever she was made to put pressure of weight on her legs. I would strongly advise you do what's necessary to get ur levels raised. Keeps us updated? x