Abortion is legal in Maine.
Here are some clinics I recommend:
https://www.plannedparenthood.org/health-center/maine/portland/04101/portland-health-center-2940-91770?utm_campaign=portland-health-center&utm_medium=organic&utm_source=local-listing
https://www.mabelwadsworth.org/
https://mainefamilyplanning.org/