Labour starting or false alarm??

So since yesterday I’ve been getting pelvic pressure, it feels so heavy and bruised down there. I cannot walk properly, i have to waddle around. It gets so difficult for me to do anything with the bottom pressure. I went for a 30mins walk today thinking it might help ease the pain, i was wrong I’ve discovered another symptom today which is very unusual, all of a sudden i started getting hot flashes (18degrees here).

I dunno if this is all a sign of labour or not?? Please give me some input as I’m a FTM and don’t really know what to expect!

TIA x