Cramping& back pain, no baby movement and yellow discharge,26 weeks☹️

Hello this is my first pregnancy so all of this is new to me, i’m 26 weeks pregnant

I had a lot of yellow discharge this morning which was a jelly like consistency, this isn’t the regular for me as discharge hasn’t really been a symptom throughout my pregnancy.

Baby has always been a mover and his/her movements dramatically reduced today, I must of felt about two this morning and only two a couple of hours ago.. they just are not as frequent at all... and sometimes non existent. I can normally feel baby keeping a lot within an hour.

On top of this I’m now experiencing really bad back pain it’s horrible and cramping in my belly...just overall awful pelvic pain/menstrual pain!☹️

I’m just worried and I worry about calling midwife/hospital if everything is okay, I don’t want to seem silly and waste their time.

Could anybody help me/know what this could be? xx