Cramping and preg?

Sierra. • Pcos, ttc for 2 years , starting metformin.
Hi guys I took an at home preg test last thurs it was positive and ever since I've been having bad cramping and nausea  and mild vomiting and I am always tired. I have pcos  and I'm worried that this was a false positive. Do these sound like things that happen when your preg?