frustrated venting

LT
This month my af just showed 3-4 days early. After 4 months of what looks like great charting, and nothing. I know it can take a while, but I'm starting to get worried that something is wrong. I am getting some blood work done in a few days, and thankfully a friend of mine that is a doc scheduled me for an ultra sound and a referral to a fertility clinic. I really never expected to have to do all of this to try to get pregnant. Today is one of my last days of holidays, and I am just so sad. Trying to shake out of it and not get too down. Thanks for listening. And any advice is greatly appreciated.