help..

hi ladies....I had an early miscarriage last december & my husband & I are actively TTC #2 the last day of my PD was 9/2 & I've been getting some cramps/pain in my lower belly (after my miscarriage every month any pain scares me just to think I could be & miscarry again) my question is when & if I do get pregnant soon should I or is it recommended to get on bed rest