Last cycle oct. 25 i have pinching feelings in my stomach my stomach feels uncomtorable and i get cramps occasionaly what could it be?

Do home pregnancy : Test and if u r not pregnant see your PCP for evaluation.

Effect of hormones: There are significant changes in estrogen and Progesterone that occur all throughout your monthly menstrual cycle. It is quite possible some of the receptors in your stomach/gut are affected a bit by the changes that occur on a monthly basis causing alterations in the normal forward flow of food, liquid, and gas causing the pain you describe. The muscles in your gut are similar to your uterus.