Babies roll when they are ready too.  I suggest putting a pillow under her belly so that she has to push up more on her arms.  Will help to strengthen them.

Now, this suggestion is going to sound a bit way out there, but get her rolling in the bath.  The force of the water will make it easier for her and it is lots of fun.  Obviously, I'm talking about you helping her to roll and her being under constant supervision.  Hydrotherapies, even in the bath, will help to get your little one on the move.

I don't think it will be long and you will be asking us how to get her to stop moving around.

All babies are different and so do different things at different times. She's been checked by a doctor who said she's fine so don't worry, she'll get there when she's ready. Just keep giving her the floor time & tummy time.

My first child was slow with all the physical (but quick with the mental). I can't recall when she first rolled, but she didn't crawl until 10 months & walked at 17 months. I was told to do this & that to 'make' her do these things. I encouraged her, but never made her do the things suggested as I knew she'd get there when she was ready.

Don't worry, it's all ok.  Babies will do things when they feel like it.  My son has never officially rolled over from his tummy to his back. Only from hib back to his tummy.  They find what they feel is comfortable and will stick with it until they learn something that is even more fun.  As for the arm, you can keep moving it so she can learn how to move her arm to lift herself up, but if she is doing it on her own, in a seemingly purposeful way, then more then likely she wants it like that.  My son gets contorted while playing all the time.  This is very normal.  But really keep what you are doing, and when she is on her tummy, put her favorite things infront to encourage her to lift herself up more.  But remember all babies are different, and every baby likes to do their own thing on their own time.  It's one lesson all parents must learn, we just can't control when they learn how to do anything, they will learn when they are ready to do so.  So keep up the good work, because before you know it she will be off and running, lol!

I would also think she is fine.

Jedd had medical issues and he didn't roll oer until about 9 months old.

If you want to help strengthen those muscles you can do what we did....we used to lay him on his back. We would then grasp his ankles and slowly roll him over. VERY slowly. This makes his muscles react to the tension and grow stronger. We would roll him slowly in both directions to work on both sides of his abs.

We had an Occupational Therapist tell us that is what they do as well. We didn't know that at the time, we were jsut trying to "teach" him to roll over. LOL

Your daughter is fine.. My daughter didn't didn't roll over either.. She also hated tummy time!
My daughter never showed any interest in crawling until she was 10.5-11 months old..

I agree with your doctor there isn't a problem with your daughter..
Things will come in time, every baby is different..

Good luck!!