Pregnant?

I currently am on my 35 day of my cycle? It usually doesn’t last this long usually 25-28 days. I took a test after the day I thought I was “late” for my usual cycle. It was negative? But my boobs are very sore my nipples are sore / tingling to my touch. I haven’t had any morning sickness, but I have had full cramps and I feel exhausted.

I wasn’t on any form of BC or used an emergency contraception when my bf finished.

So I’m just a little worried / confused at this point!!

Any advice?