If you're on medication that would potentially harm a baby, I can't understand why you wouldn't buy a Home Pregnancy Test and find out. Or as an alternative, go in and see your doctor and get evaluated and tested there.
It sounds like you should see your doctor to find out what's going on with you. If you're not sure if your period on July 9th was a true one or not, then you may want to take a Home Pregnancy Test , too.
If you didn't take the test using your first morning urine, you may want to repeat it. Otherwise, I'd suggest getting checked out by your doctor to figure out what's going on. You can also ask about a blood pregnancy test while you're seeing your doctor.
Congratulations on your weight loss! I wish I could tell you if you're pregnant or not. PCOS can definitely make it harder to get pregnant. Many women with PCOS end up seeing a reproductive endocrinologist (fertility specialist) after a year of trying on their own with no results.
I hope you get a Big Fat Positive in two weeks! Write back and let us know--we're all cheering for you.
This article lists many reasons for Missing a Period other than pregnancy. You may want to repeat the test again this weekend if your period doesn't start. Otherwise, you may want to check in with your doctor and possibly get a blood pregnancy test and find out where your period is hiding.
How about taking a Home Pregnancy Test to see? The bleeding won't interfere with the accuracy of the test results. Do however, make sure to use first morning urine if the brand of test you buy requests that.