Headache

So, I’m new to all this but recently my hubs and I started TTC. We had sex every day while ovulating and about half way through I noticed I start having a dull constant headache. Nothing crazy or even worth taking Tylenol over, but it’s just there. It’s still there and I never get headaches, like ever, am I crazy or could this like possibly mean conception before the implantation stage? Just started the 2ww so of course this means time will drag til I know for sure. Just wanted to know if anyone else has experienced this and ended up with a positive.