Quick question so since last night I’ve been so uncomfortable with Lower back pains, just though…

Quick question so since last night I’ve been so uncomfortable with Lower back pains, just though maybe it’s coz I’m 37 weeks... but than I woke up this morning to take lil man to nursery and when I came home I got into bed was really cold but my body felt heated no runny nose and I have a slight sore throat.. 🙈 but I though it can’t be a flu coz I don’t feel that rough and it don’t usually come with bad lower back pains... so what do u ladies think??? Also my nesting period has gone that started weeks ago now I’ve just felt exhausted lol