Quoting emmaprego:“ I know Im going to be railroaded for this but its better then smoking. Through out my pregnancy I have ... [snip!] ... the time? I know alot of you cant hold your selfs back from being nasty on this topic, but I was just looking for some help”
In my last pregnancy I believe I used during the last month, since I was in so much pain, though I don't recall with 100% certainty.
Hospitals are not supposed to test without your consent as it's a violation of the Constitution, though many do anyway. I can't honestly say if you will be tested, though I do know women in Florida who have used near the end of their pregnancies and were ok when they gave birth.
Best of luck.