Well as I always salute and support captain dildo only advise I can suggest is make sure u have a good idea of shape the dildo may be and the hardness of it because when I was pregnant I tried to masturbate with a dildo that was to hard and it pushed against the wrongish spot and it just became uncomfortable to keep going to do the full yahoo that day bu yeah I'd detention satisfy yourself like thy always say when mamas happy then babies happy and or everyones happy anyways You go girl btw it's way less awkward then having sexual intercourse with a man when he can't lay on top of you.hope my weird words of triumph are somewhat of a help for you
My only thought would be to make sure you are thoroughly washing it so you don't get an infection from it.
It's OK if you are not bleeding and untill you start dilating. I would be afraid of infection if you start to dilate.