Pregnancy with PCOS

Savannah • Newly weds! But have been together since 2006- found out in 2013 I had PCOS. Dealing with that and will start TTC soon!
So I've read on here a couple of you have found out that you're pregnant from blood test but standard at home test come back negative most of you have been pregnant for about 15 weeks before you found out what do you suggest for people with PC OS to do if they are experiencing a similar situation? Did you have any symptoms what forced you to go to the doctors to have blood test?