Hi there, I'm 27 weeks pregnant with my first. recently I've been getting mild cramps/stitch feeling all over my belly, however today the cramps have started to become worse and lasting longer than before even when resting. it's starting to now travel round to my lower back. I've also been feeling faint/dizzy the last couple of days. What does this mean? I don't want to phone and hassle the doctor/midwife unless it's something really to be concerned about. Thanks