Confused need advice

So I’m 24 days late but I normally have irregular periods so I don’t ever think much of that. I’m overweight too so I feel like my chances of conceiving are super low. But today I woke up had coffee and then had some pizza for lunch and I was leaving my friends house to go home and in the car I got super nauseous and when I got home I thought I might throw up but I didn’t I went to my room and laid down. The nausea is still kinda there but better and I had a sharp pain for a second kinda above my vagina. So what are the chances this is pregnancy? I don’t wanna get my hopes up or anything and I’m scared to take a test.