Labor or just pregnancy

This may be a TMI post so, there is your warning just incase.

The last 3-4 days I have been having cramping in the lower part of my stomach.

I have also used the restroom (number 2) way more often. This morning number 2 turned into diarrhea an I've been extremely nauseated. Also, within this time frame I've completely lost my appetite. I haven't eaten all day.

The cramping is consistent when it happens an it'll last for 20-45 minutes. Then it just disappears. I have had BH since I was 20 weeks pregnant an I know this pain isn't from that or constipation. It also doesn't feel like my round ligament pain.

I also woke yesterday an I felt completely off. I don't know how to explain it. I have also got a head cold or sinus infection. Nothing serious, just snotty and my throat is a little sore. Other than that nothing like the flu or anything.

I guess my question is do you think it would be worth it to call the emergency number and let them know what's going on? Or just wait and tell my doctor Thursday? I have anxiety and don't wanna go in and waste the nurses/doctors time if nothing is wrong and take them away from a woman who could really need them.

I'm just a person who doesn't wanna be center of attention and doesn't want someone to go without because of me. Also, wanted to add I'm 35 weeks and 4 days.