need advice and help. FTM

37 weeks and i’ve lost my mucus plug already, lost it little by little over the last few weeks, and lost the rest today but all day i have had a constant back pain that won’t ease up at all, and i’ve had many, MANY, spells of cramping with nausea and hot flashes and it just started to be like that today. i just feel all around terrible. no matter how i lay or what i do the back pain will not go away or ease up at all, and the cramping has been making me feel extremely nauseous, but i haven’t thrown up. i keep getting some sharp pains in my private area as well. i’m not sure if it’s normal pregnancy stuff or if it’s something i should talk to a doctor or midwife about. should i call L&D or just continue to wait it out? idk what to do.