Could I be in the early stages of pregnancy?

Laura

So I have PCOS so my cycle is a little longer. My husband and I have been trying to get pregnant for the last 8 months. I usually start my period every 36-39 days. But it’s usually pretty consistent. I had some weird cramping on my left lower abdomen a week ago. It’s now day 40 and I still haven’t started my period. I’ve had some slight cramping here and there. I wasn’t feeling up to eating, but I thought it may be from anxiety since I do deal with that. But I didn’t get sick. I got way too ahead of myself and took a test last night, but it came out negative. If I am possibly pregnant when would I start seeing symptoms and when should I possibly test again? I don’t want to get my hopes up.