34w5d unwell! tmi help please?

Haven't been able to eat properly for the last week as I've not felt very well but I had diarrea the other day then kept feeling constipated and not been wanting to eat and now that I've ate a load of fruit the diarrea has suddenly came back again :s my tummy keeps making weird noises like I'm hungry should I go to the doctors???? Also had some cramping in my tummy aswell.