all pregnancies are different in what you feel, and yes your symptoms will come and go.. my first pregnancy I was carrying twins, but they werent detected on u/s so we didnt know. I ended up with a m/c, i was very very sick with this pregnancy.. my next pregnancy i was very sick at first, then nothing, then sick again.. i went into labor at 34 weeks and put on bedrest and delivered my son at 36 weeks and he was healthy and happy.. with my third pregnancy I got sick maybe twice the whole pregnancy, and i went clear to 40 weeks and had my water broken... point in saying this is, i understand the worry of a possible miscarriage.. i have gone thru it also, and 2 other pregnancies that i worried the whole time if i lost a symptom, or didnt feel a kick. but they were fine. i strongly suggest you see your doctor, especially with a previous m/c. they can monitor you and possibly catch something early enough to help.. also dont hesitate to ask them questions, thats what they are there for to keep you sane! wishing you all the best hun!